Update updating-to-new-releases.md with note about global installs (#6190)

* Update updating-to-new-releases.md

Related to #6140

* Update updating-to-new-releases.md

Linking to getting started following discussion on #6190. 
Adapt terminology to current installation methods.

* Update updating-to-new-releases.md

typo, rleative link

* Update docusaurus/docs/updating-to-new-releases.md

Co-Authored-By: carpben <[email protected]>

Author: carpben

docusaurus/docs/updating-to-new-releases.md

@@ -8,9 +8,10 @@ Create React App is divided into two packages:
 - `create-react-app` is a global command-line utility that you use to create new projects.
 - `react-scripts` is a development dependency in the generated projects (including this one).
 
-You almost never need to update `create-react-app` itself: it delegates all the setup to `react-scripts`.
+When you run `npx create-react-app my-app` it automatically installs the latest version of Create React App.  
+> If you've previously installed `create-react-app` globally via `npm install -g create-react-app`, please visit [Getting Started](getting-started.md) to learn about current installation steps. 
 
-When you run `create-react-app`, it always creates the project with the latest version of `react-scripts` so you’ll get all the new features and improvements in newly created apps automatically.
+Create React App creates the project with the latest version of `react-scripts` so you’ll get all the new features and improvements in newly created apps automatically.
 
 To update an existing project to a new version of `react-scripts`, [open the changelog](https://github.com/facebook/create-react-app/blob/master/CHANGELOG.md), find the version you’re currently on (check `package.json` in this folder if you’re not sure), and apply the migration instructions for the newer versions.