package(prettier-config): update docs (#44620)

* Fix doc for extending prettier-config in .prettierrc file * Add step for adding prettier-config in .prettierrc.js file * Add changelog
WordPress · Oct 5, 2022 · 509cb24 · 509cb24
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diff --git a/packages/prettier-config/CHANGELOG.md b/packages/prettier-config/CHANGELOG.md
@@ -2,6 +2,11 @@
 
 ## Unreleased
 
+### Internal
+
+-   Fix doc for extending the prettier config in `.prettierrc` config file.
+-   Add step to extend the prettier config in `.prettierrc.js` config file.
+
 ## 2.1.0 (2022-09-21)
 
 ## 2.0.0 (2022-08-24)

diff --git a/packages/prettier-config/README.md b/packages/prettier-config/README.md
@@ -23,7 +23,13 @@ Add this to your `package.json` file:
 Alternatively, add this to `.prettierrc` file:
 
 ```
-extends: ['@wordpress/prettier-config']
+"@wordpress/prettier-config"
+```
+
+Or add this to `.prettierrc.js` file:
+
+```js
+module.exports = require( '@wordpress/prettier-config' );
 ```
 
 ## Contributing to this package