Fix various typos (#941)

I found these using cspell. Unfortunately, it produces lots of false
positives, so I'm not proposing enforcing its results now.

Author: ddbeck

feature-group-definitions/README.md

@@ -6,8 +6,8 @@ See [ddbeck/common-web-feature-mockup](https://github.com/ddbeck/common-web-feat
 
 ## What is a web platform feature?
 
-To identify, group, and report on the availability of web platform features, it might be nice to have a working defintion of a web platform feature.
-For the purposes of this project, consider this defintion:
+To identify, group, and report on the availability of web platform features, it might be nice to have a working definition of a web platform feature.
+For the purposes of this project, consider this definition:
 
 **A _feature_ (or _feature group_) is a logical subset of all the addressable behaviors and interfaces that the web platform, as mediated by browsers and related tools, exposes to web developers.**
 

feature-group-definitions/mathml.yml

@@ -67,4 +67,4 @@ compat_features:
   - mathml.global_attributes.mathbackground
   - mathml.global_attributes.mathcolor
   - mathml.global_attributes.mathsize
-  - mathml.global_attributes.scriptlevel # TODO: when setting Baseline status, we'll probably want to ignore this. It's the one piece not interopable and has an odd story.
+  - mathml.global_attributes.scriptlevel # TODO: when setting Baseline status, we'll probably want to ignore this. It's the one piece not interoperable and has an odd story.

packages/web-features/README.md

@@ -28,4 +28,4 @@ For browser support iconography (that is, browser logos and checkmarks and Xs),
 1. **Do not** show a version number, whether one is provided.
 1. If `status.baseline` is `"high"` or `"low"`, then show a green checkmark (✅, "supported") beside each browser's logo icon.
 1. If `status.baseline` is `false` and the browser's `status.support` key (for example, `status.support.edge`) is `undefined` or `false`, then show a gray X ("unsupported") beside the browser's logo icon.
-1. If `status.baseline` is `"high"` or `"low"` and the browser's `status.support` key is a string, then show a green checkmark ("supported") beside the brower's logo icon.
+1. If `status.baseline` is `"high"` or `"low"` and the browser's `status.support` key is a string, then show a green checkmark ("supported") beside the browser's logo icon.

towards-features.md

@@ -113,6 +113,6 @@ The [browser-statuses](https://github.com/w3c/browser-statuses#web-browser-imple
 - It contains a (manual) mechanism to select representative entries in platform status projects to compute rough implementation support for a feature or a specification.
 - It contains code to actually compute a rough implementation support score from data in platform status projects
 
-Among the things that may need to be revisited: the browser-statuses project does not yet try to be a comprehensive list of features. Also, brower-statuses only includes features that are always defined within a specification and does not yet let one group features into higher-level ones.
+Among the things that may need to be revisited: the browser-statuses project does not yet try to be a comprehensive list of features. Also, browser-statuses only includes features that are always defined within a specification and does not yet let one group features into higher-level ones.
 
 Regardless of the starting point, what is needed is a coordination effort between status platforms to converge on a shared vision for features, agree on a common mechanism to add new ones, and identify contributors and maintainers.