message: docs: Update documentation URLs in RELEASE_NOTES
diff: ### New features
  - Metadata of resources can now be edited by PATCHing its description resource.
  This has an impact on which requests are allowed.
  - See the [documentation](https://communitysolidserver.github.io/CommunitySolidServer/5.0/usage/metadata/) for more information.
  + See the [documentation](https://communitysolidserver.github.io/CommunitySolidServer/5.x/usage/metadata/) for more information.
  - Components.js was upgraded to v5. If you have created an external component
  you should also upgrade to prevent warnings and conflicts.
  - The server can now run multithreaded with multiple workers. This is done with the `--workers` or `-w` flag.
  @@ -109,9 +109,9 @@ as described in https://github.com/inrupt/solid-client-authn-js/issues/2103.
  ## v4.0.0
  ### New features
  - The server can be started with a new parameter to automatically generate accounts and pods,
  - for more info see [here](https://communitysolidserver.github.io/CommunitySolidServer/4.0/seeding-pods/).
  + for more info see [here](https://communitysolidserver.github.io/CommunitySolidServer/4.x/seeding-pods/).
  - It is now possible to automate authentication requests using Client Credentials,
  - for more info see [here](https://communitysolidserver.github.io/CommunitySolidServer/4.0/client-credentials/).
  + for more info see [here](https://communitysolidserver.github.io/CommunitySolidServer/4.x/client-credentials/).
  - A new `RedirectingHttpHandler` class has been added which can be used to redirect certain URLs.
  - A new default configuration `config/https-file-cli.json`
  that can set the HTTPS parameters through the CLI has been added.
  