Update url to see prettier in action (facebook#8610)

Author: M165437

docusaurus/docs/setting-up-your-editor.md

@@ -112,7 +112,7 @@ The same way you can debug your application in IntelliJ IDEA Ultimate, PhpStorm,
 
 ## Formatting Code Automatically
 
-Prettier is an opinionated code formatter with support for JavaScript, CSS and JSON. With Prettier you can format the code you write automatically to ensure a code style within your project. See the [Prettier's GitHub page](https://github.com/prettier/prettier) for more information, and look at this [page to see it in action](https://prettier.github.io/prettier/).
+Prettier is an opinionated code formatter with support for JavaScript, CSS and JSON. With Prettier you can format the code you write automatically to ensure a code style within your project. See the [Prettier's GitHub page](https://github.com/prettier/prettier) for more information, and look at this [page to see it in action](https://prettier.io/playground/).
 
 To format our code whenever we make a commit in git, we need to install the following dependencies: