doc: mention new documentation-reviewers subteam

CONTRIBUTING.md

@@ -323,7 +323,7 @@ All the review template samples provided in this section are generic and meant a
 
 To get more information about how to review specific parts of Nixpkgs, refer to the documents linked to in the [overview section][overview].
 
-If a pull request contains documentation changes that might require feedback from the documentation team, ping @NixOS/documentation-team on the pull request.
+If a pull request contains documentation changes that might require feedback from the documentation team, ping [@NixOS/documentation-reviewers](https://github.com/orgs/nixos/teams/documentation-reviewers) on the pull request.
 
 If you consider having enough knowledge and experience in a topic and would like to be a long-term reviewer for related submissions, please contact the current reviewers for that topic. They will give you information about the reviewing process. The main reviewers for a topic can be hard to find as there is no list, but checking past pull requests to see who reviewed or git-blaming the code to see who committed to that topic can give some hints.
 

doc/README.md

@@ -203,3 +203,7 @@ In that case, please open an issue about the particular documentation convention
       _Default value:_ the output path's hash.
 
   ```
+
+## Getting help
+
+If you need documentation-specific help or reviews, ping [@NixOS/documentation-reviewers](https://github.com/orgs/nixos/teams/documentation-reviewers) on your pull request.