Update README.md

Co-Authored-By: Jessica Schilling <jessica@protocol.ai>

README.md

@@ -178,7 +178,6 @@ For a community-curated lists of awesome projects using IPFS, check out [awesome
 ### Documentation
 
 * [Documentation site](https://docs.ipfs.io)
-* [Beta documentation site](https://docs-beta.ipfs.io)
 
 ### Protocol Implementations