fix: Updated releases/changelog links (facebook#32551)

Summary:
[react-native-community/releases](https://github.com/react-native-community/releases) is on **DEPRECATION ALERT**, update to [reactwg/react-native-releases](https://github.com/reactwg/react-native-releases/discussions) ?

## Changelog

<!-- Help reviewers and the release process by writing your own changelog entry. For an example, see:
https://github.com/facebook/react-native/wiki/Changelog
-->

[General] [Changed] - Updated the links for the discussions and changelog

Pull Request resolved: facebook#32551

Reviewed By: yungsters

Differential Revision: D32244225

Pulled By: cortinico

fbshipit-source-id: d6c72540525484b445b507006a10f2f54baa18d5

CONTRIBUTING.md

@@ -42,7 +42,8 @@ The main repository, <https://github.com/facebook/react-native>, contains the Re
 There are a few other repositories you might want to familiarize yourself with:
 
 * **React Native website** which contains the source code for the website, including the documentation, located at <https://github.com/facebook/react-native-website>
-* **Releases** are coordinated through the <https://github.com/react-native-community/releases> repository. This includes important documents such as the Changelog.
+* **Releases**  Conversations for new releases are happening [in this discussion repo](https://github.com/reactwg/react-native-releases/discussions).
+* **Changelog** The changelog can be found [here](https://github.com/facebook/react-native/blob/main/CHANGELOG.md).
 * **Discussions** about the future of React Native take place in the <https://github.com/react-native-community/discussions-and-proposals> repository.
 * **High-quality plugins** for React Native can be found throughout the [React Native Community GitHub Organization](http://github.com/react-native-community/).
 

README.md

@@ -97,7 +97,7 @@ The source for the React Native documentation and website is hosted on a separat
 
 Upgrading to new versions of React Native may give you access to more APIs, views, developer tools, and other goodies. See the [Upgrading Guide][u] for instructions.
 
-React Native releases are discussed in the React Native Community, [**@react-native-community/react-native-releases**][repo-releases].
+React Native releases are discussed [in this discussion repo](https://github.com/reactwg/react-native-releases/discussions).
 
 [u]: https://reactnative.dev/docs/upgrading
 [repo-releases]: https://github.com/react-native-community/react-native-releases