docs: mention docusaurus.community site in resources (#8943)

Co-authored-by: Joshua Chen <sidachen2003@gmail.com>

website/community/2-resources.mdx

@@ -2,6 +2,20 @@
 
 A curated list of interesting Docusaurus community projects.
 
+## Community documentation {#community-documentation}
+
+The **[Docusaurus.community](https://docusaurus.community)** site extends the [official docs](/docs) with more complex examples and full articles that recommend best practices and provide solutions to common problems.
+
+It is also a full Docusaurus application just like our main site, so customization and experimentation examples are perfectly suited to be hosted there.
+
+:::info
+
+We might allow direct links to be added in our official documentation that point to the community documentation, on a case-by-case basis, if the community finds such links to articles useful.
+
+We are also contemplating further integration into the official documentation at some point in the future.
+
+:::
+
 ## Videos {#videos}
 
 - [F8 2019: Using Docusaurus to Create Open Source Websites](https://www.youtube.com/watch?v=QcGJsf6mgZE)