chore: Add missing code fence languages

Author: nschonni

content/README.md

@@ -249,7 +249,7 @@ https://github-images.s3.amazonaws.com/enterprise/2.20/assets/images/help/profil
 
 Sometimes you want to link to a Dotcom-only article in Enterprise content and you don't want the link to be Enterprise-ified. To prevent the transformation, write the link using HTML and add a class of `dotcom-only`. For example:
 
-```
+```html
 <a href="/github/site-policy/github-terms-of-service" class="dotcom-only">GitHub's Terms of Service</a>
 ```
 

content/actions/creating-actions/dockerfile-support-for-github-actions.md

@@ -47,20 +47,21 @@ The Docker `ENTRYPOINT` instruction has a _shell_ form and _exec_ form. The Dock
 
 If you configure your container to use the _exec_ form of the `ENTRYPOINT` instruction, the `args` configured in the action's metadata file won't run in a command shell. If the action's `args` contain an environment variable, the variable will not be substituted. For example, using the following _exec_ format will not print the value stored in `$GITHUB_SHA`, but will instead print `"$GITHUB_SHA"`.
 
-```
+```dockerfile
 ENTRYPOINT ["echo $GITHUB_SHA"]
 ```
 
  If you want variable substitution, then either use the _shell_ form or execute a shell directly. For example, using the following _exec_ format, you can execute a shell to print the value stored in the `GITHUB_SHA` environment variable.
 
-```
+```dockerfile
 ENTRYPOINT ["sh", "-c", "echo $GITHUB_SHA"]
-````
+```
 
  To supply `args` defined in the action's metadata file to a Docker container that uses the _exec_ form in the `ENTRYPOINT`, we recommend creating a shell script called `entrypoint.sh` that you call from the `ENTRYPOINT` instruction:
 
 ##### Example *Dockerfile*
-```	
+
+```	dockerfile
 # Container image that runs your code
 FROM debian:9.5-slim
 

content/actions/creating-actions/setting-exit-codes-for-actions.md

@@ -40,7 +40,7 @@ For more information, see "[Creating a JavaScript action](/articles/creating-a-j
 
 If you are creating a Docker container action, you can set a failure exit code in your `entrypoint.sh` script. For example:
 
-```
+```shell
 if <condition> ; then
   echo "Game over!"
   exit 1

content/actions/guides/building-and-testing-nodejs.md

@@ -219,7 +219,7 @@ steps:
 
 The example above creates an *.npmrc* file with the following contents:
 
-```
+```ini
 //registry.npmjs.org/:_authToken=${NODE_AUTH_TOKEN}
 @octocat:registry=https://registry.npmjs.org/
 always-auth=true

content/actions/guides/caching-dependencies-to-speed-up-workflows.md

@@ -123,14 +123,14 @@ A cache key can include any of the contexts, functions, literals, and operators
 Using expressions to create a `key` allows you to automatically create a new cache when dependencies have changed. For example, you can create a `key` using an expression that calculates the hash of an npm `package-lock.json` file.
 
 {% raw %}
-```
+```yaml
 npm-${{ hashFiles('package-lock.json') }}
 ```
 {% endraw %}
 
 {% data variables.product.prodname_dotcom %} evaluates the expression `hash "package-lock.json"` to derive the final `key`.
 
-```
+```yaml
 npm-d5ea0750
 ```
 
@@ -143,7 +143,7 @@ You can provide a list of restore keys to use when there is a cache miss on `key
 #### Example using multiple restore keys
 
 {% raw %}
-```
+```yaml
 restore-keys: |
   npm-foobar-${{ hashFiles('package-lock.json') }}
   npm-foobar-
@@ -154,7 +154,7 @@ restore-keys: |
 The runner evaluates the expressions, which resolve to these `restore-keys`:
 
 {% raw %}
-```
+```yaml
 restore-keys: |
   npm-foobar-d5ea0750
   npm-foobar-

content/actions/guides/publishing-nodejs-packages.md

@@ -79,7 +79,7 @@ jobs:
 
 In the example above, the `setup-node` action creates an *.npmrc* file on the runner with the following contents:
 
-```
+```ini
 //registry.npmjs.org/:_authToken=${NODE_AUTH_TOKEN}
 registry=https://registry.npmjs.org/
 always-auth=true
@@ -122,7 +122,7 @@ jobs:
 
 The `setup-node` action creates an *.npmrc* file on the runner. When you use the `scope` input to the `setup-node` action, the *.npmrc* file includes the scope prefix. By default, the `setup-node` action sets the scope in the *.npmrc* file to the account that contains that workflow file.
 
-```
+```ini
 //npm.pkg.github.com/:_authToken=${NODE_AUTH_TOKEN}
 @octocat:registry=https://npm.pkg.github.com
 always-auth=true

content/actions/guides/storing-workflow-data-as-artifacts.md

@@ -115,7 +115,7 @@ jobs:
 
 You can define a custom retention period for individual artifacts created by a workflow. When using a workflow to create a new artifact, you can use `retention-days` with the `upload-artifact` action. This example demonstrates how to set a custom retention period of 5 days for the artifact named `my-artifact`:
 
-```
+```yaml
   - name: 'Upload Artifact'
     uses: actions/upload-artifact@v2
     with:

content/actions/hosting-your-own-runners/using-a-proxy-server-with-self-hosted-runners.md

@@ -37,7 +37,7 @@ If setting environment variables is not practical, you can set the proxy configu
 
 An example _.env_ proxy configuration is shown below:
 
-```
+```ini
 https_proxy=http://proxy.local:8080
 no_proxy=example.com,myserver.local:443
 ```

content/actions/managing-workflow-runs/adding-a-workflow-status-badge.md

@@ -34,30 +34,30 @@ https://github.com/<OWNER>/<REPOSITORY>/workflows/<WORKFLOW_FILE_PATH>/badge.svg
 
 This Markdown example adds a status badge for a workflow with the name "Greet Everyone." The `OWNER` of the repository is the `actions` organization and the `REPOSITORY` name is `hello-world`.
 
-```
+```markdown
 ![example workflow name](https://github.com/actions/hello-world/workflows/Greet%20Everyone/badge.svg)
 ```
 
 ### Using a workflow file path
 
 This Markdown example adds a status badge for a workflow with the file path `.github/workflows/main.yml`. The `OWNER` of the repository is the `actions` organization and the `REPOSITORY` name is `hello-world`.
 
-```
+```markdown
 ![example workflow file path](https://github.com/actions/hello-world/workflows/.github/workflows/main.yml/badge.svg)
 ```
 
 ### Using the `branch` parameter
 
 This Markdown example adds a status badge for a branch with the name `feature-1`.
 
-```
+```markdown
 ![example branch parameter](https://github.com/actions/hello-world/workflows/Greet%20Everyone/badge.svg?branch=feature-1)
 ```
 
 ### Using the `event` parameter
 
 This Markdown example adds a badge that displays the status of workflow runs triggered by the `pull_request` event.
 
-```
+```markdown
 ![example event parameter](https://github.com/actions/hello-world/workflows/Greet%20Everyone/badge.svg?event=pull_request)
 ```

content/actions/reference/workflow-commands-for-github-actions.md

@@ -253,7 +253,7 @@ During the execution of a workflow, the runner generates temporary files that ca
 
 **Warning:** Powershell does not use UTF-8 by default. Make sure you write files using the correct encoding. For example, you need to set UTF-8 encoding when you set the path:
 
-```
+```yaml
 steps:
   - run: echo "mypath" | Out-File -FilePath $env:GITHUB_PATH -Encoding utf8 -Append
 ```
@@ -287,7 +287,7 @@ For multiline strings, you may use a delimiter with the following syntax.
 ##### Example
 
 In this example, we use `EOF` as a delimiter and set the `JSON_RESPONSE` environment variable to the value of the curl response.
-```
+```yaml
 steps:
   - name: Set the value
     id: step_one

content/admin/enterprise-management/evacuating-a-cluster-node.md

@@ -14,40 +14,40 @@ If you're taking a node offline that has any data services (like git, pages, or
 
 1. Find the `uuid` of the node in with the `ghe-config`command.
 
-    ```
+    ```shell
     $ ghe-config cluster._hostname_.uuid
     ```
 
 2. You'll need to monitor the status of your node while the data is being copied. Ideally, the node shouldn't be taken offline until the copying is complete. To monitor the status of your node, run any of the following commands:  
 
     For Git
-    ```
+    ```shell
     ghe-spokes evac-status
     ```
     For {% data variables.product.prodname_pages %}
-    ```
+    ```shell
     echo "select count(*) from pages_replicas where host = 'pages-server-<uuid>'" | ghe-dbconsole -y
     ```
     For storage
-    ```
+    ```shell
     ghe-storage evacuation-status
     ```
 
 3. After the copying is complete, you can evacuate the storage service. Run any of the following commands:  
 
     For Git
-    ```
+    ```shell
     ghe-spokes server evacuate git-server-<uuid>
     ```
     For {% data variables.product.prodname_pages %}
-    ```
+    ```shell
     ghe-dpages evacuate pages-server-<uuid>
     ```
     For storage, take the node offline
-    ```
+    ```shell
     ghe-storage offline storage-server-<uuid>
     ```
       then evacuate
-    ```
+    ```shell
     ghe-storage evacuate storage-server-<uuid>
     ```

content/admin/enterprise-management/initializing-the-cluster.md

@@ -46,7 +46,7 @@ The names of the nodes can be any valid hostname you choose. The names are set a
 
 Specify the first cluster node you configured as the MySQL primary via `mysql-server` and `mysql-master`.
 
-```
+```ini
 [cluster]
   mysql-master = ghe-data-node-1
   redis-master = ghe-data-node-1

content/admin/enterprise-management/migrating-elasticsearch-indices-to-github-enterprise-server-214-or-later.md

@@ -19,7 +19,7 @@ versions:
 
 The migration script checks for any `search` indices first while the appliance is online. Migrating `search` indices can take a few minutes to a few days, depending on their size. For an example of large indices, these indices took a couple of days to migrate in our test environment.
 
-```
+```shell
 admin@ip-172-31-2-141:~$ curl -s http://localhost:9200/_cat/indices?v | sort -n -k 6
 green  open   blog-1                     1   0          0            0       144b           144b
 green  open   projects-1                 1   0          0            0       144b           144b
@@ -72,7 +72,7 @@ The `webhook` indices start with `hookshot-logs-`.
 
 You can see available indices on your appliance using curl.
 
-```
+```shell
 admin@ip-172-31-2-141:~$ curl -s http://localhost:9200/_cat/indices?v | sort -n -k 6
 green  open   blog-1                     1   0          0            0       144b           144b
 green  open   projects-1                 1   0          0            0       144b           144b

content/admin/github-actions/manually-syncing-actions-from-githubcom.md

@@ -61,7 +61,7 @@ This example demonstrates using the `actions-sync` tool to sync an individual ac
      * You can sync multiple actions by replacing the `--repo-name` parameter with `--repo-name-list` or `--repo-name-list-file`. For more information, see the [`actions-sync` README](https://github.com/actions/actions-sync#actions-sync).
 1. After the action repository is created on your enterprise instance, people in your enterprise can use the destination repository to reference the action in their workflows. For the example action shown above:
 
-   ```
+   ```yaml
    uses: synced-actions/docker-build-push-action@v1
    ```
 

content/admin/policies/creating-a-pre-receive-hook-script.md

@@ -94,7 +94,7 @@ You can test a pre-receive hook script locally before you create or update it on
 
 2. Create a file called `Dockerfile.dev` containing:
 
-    ```
+    ```dockerfile
     FROM gliderlabs/alpine:3.3
     RUN \
       apk add --no-cache git openssh bash && \
@@ -116,7 +116,7 @@ You can test a pre-receive hook script locally before you create or update it on
 
 3. Create a test pre-receive script called `always_reject.sh`. This example script will reject all pushes, which is useful for locking a repository:
 
-    ```
+    ```shell
     #!/usr/bin/env bash
 
     echo "error: rejecting all pushes"

content/admin/user-management/migrating-to-internal-repositories.md

@@ -33,11 +33,11 @@ If you don't have private mode enabled, the migration script will have no effect
 
 1. Connect to the administrative shell. For more information, see "[Accessing the administrative shell (SSH)](/enterprise/admin/installation/accessing-the-administrative-shell-ssh)."
 2. Navigate to the `/data/github/current` directory.
-   ```
+   ```shell
    cd /data/github/current
    ```
 3. Run the migration command.
-   ```
+   ```shell
    sudo bin/safe-ruby lib/github/transitions/20191210220630_convert_public_ghes_repos_to_internal.rb --verbose -w | tee -a /tmp/convert_public_ghes_repos_to_internal.log
    ```
 

content/developers/apps/creating-a-github-app-from-a-manifest.md

@@ -80,7 +80,7 @@ Name | Type | Description
 
 This example uses a form on a web page with a button that triggers the `POST` request for a user account:
 
-```
+```html
 <form action="https://github.com/settings/apps/new?state=abc123" method="post">
  Create a GitHub App Manifest: <input type="text" name="manifest" id="manifest"><br>
  <input type="submit" value="Submit">
@@ -111,7 +111,7 @@ This example uses a form on a web page with a button that triggers the `POST` re
 ```
 This example uses a form on a web page with a button that triggers the `POST` request for an organization account. Replace `ORGANIZATION` with the name of the organization account where you want to create the app.
 
-```
+```html
 <form action="https://github.com/organizations/<em>ORGANIZATION</em>/settings/apps/new?state=abc123" method="post">
  Create a GitHub App Manifest: <input type="text" name="manifest" id="manifest"><br>
  <input type="submit" value="Submit">

content/developers/apps/creating-ci-tests-with-the-checks-api.md

@@ -724,7 +724,7 @@ To push to a repository, your app must have write permissions for "Repository co
 
 In order to commit files, Git must know which [username](/articles/setting-your-username-in-git/) and [email](/articles/setting-your-commit-email-address-in-git/) to associate with the commit. Add two more environment variables in your `.env` file to store the name (`GITHUB_APP_USER_NAME`) and email (`GITHUB_APP_USER_EMAIL`) settings. Your name can be the name of your app and the email can be any email you'd like for this example. For example:
 
-```
+```ini
 GITHUB_APP_USER_NAME=Octoapp
 GITHUB_APP_USER_EMAIL[email protected]
 ```

content/developers/apps/identifying-and-authorizing-users-for-github-apps.md

@@ -89,7 +89,7 @@ Name | Type | Description
 
 By default, the response takes the following form. The response parameters `expires_in`, `refresh_token`,  and `refresh_token_expires_in` are only returned when you enable the beta for expiring user-to-server access tokens.
 
-```
+```json
 {
   "access_token": "e72e16c7e42f292c6912e7710c838347ae178b4a",
   "expires_in": "28800",

content/developers/overview/secret-scanning.md

@@ -61,7 +61,7 @@ Create a public, internet accessible HTTP endpoint at the URL you provided to us
 
 ##### Example POST sent to your endpoint
 
-```
+```http
 POST / HTTP/1.1
 Host: HOST
 Accept: */*
@@ -95,7 +95,7 @@ Assuming you receive the following message, the code snippets below demonstrate
 The code also assumes you've set an environment variable called `GITHUB_PRODUCTION_TOKEN` with a generated PAT (https://github.com/settings/tokens). The token does not need any permissions set.
 
 **Sample message sent to verify endpoint**
-```
+```http
 POST / HTTP/1.1
 Host: HOST
 Accept: */*

content/github/building-a-strong-community/manually-creating-a-single-issue-template-for-your-repository.md

@@ -18,7 +18,7 @@ You can add YAML frontmatter to each issue template to pre-fill the issue title,
 
 Here is example YAML front matter.
 
-```
+```yaml
 ---
 name: Tracking issue
 about: Use this template for tracking new features.

content/github/collaborating-with-issues-and-pull-requests/resolving-a-merge-conflict-using-the-command-line.md

@@ -46,14 +46,14 @@ For example, if you and another person both edited the file _styleguide.md_ on t
 4. Open your favorite text editor, such as [Atom](https://atom.io/), and navigate to the file that has merge conflicts.
 5. To see the beginning of the merge conflict in your file, search the file for the conflict marker `<<<<<<<`. When you open the file in your text editor, you'll see the changes from the HEAD or base branch after the line `<<<<<<< HEAD`. Next, you'll see `=======`, which divides your changes from the changes in the other branch, followed by `>>>>>>> BRANCH-NAME`. In this example, one person wrote "open an issue" in the base or HEAD branch and another person wrote "ask your question in IRC" in the compare branch or `branch-a`.
 
- ```
-If you have questions, please
-<<<<<<< HEAD
-open an issue
-=======
-ask your question in IRC.
->>>>>>> branch-a
-  ````
+    ```
+    If you have questions, please
+    <<<<<<< HEAD
+    open an issue
+    =======
+    ask your question in IRC.
+    >>>>>>> branch-a
+    ```
 {% data reusables.pull_requests.decide-how-to-resolve-competing-line-change-merge-conflict %} In this example, both changes are incorporated into the final merge:
 
   ```shell

content/github/collaborating-with-issues-and-pull-requests/working-with-pre-receive-hooks.md

@@ -11,7 +11,7 @@ Pre-receive hooks run tests on code pushed to a repository to ensure contributio
 
 If your push isn't accepted, you'll see an error message corresponding to the failed pre-receive hook.
 
-```
+```shell
 $ git push
 Counting objects: 3, done.
 Delta compression using up to 4 threads.