docs: update content

docs/src/docPages/examples/collaborative-editing.md

@@ -22,19 +22,17 @@ Be nice! The content of this editor is shared with other users from the Internet
 In case you’re wondering what kind of sorcery you need on the server to achieve this, here is the whole backend code for the demo:
 
 :::warning Request early access
-Our plug & play collaboration backend hocuspocus is still work in progress. If you want to give it a try, [request early access](https://hocuspocus.dev/).
+Our plug & play collaboration backend hocuspocus is still work in progress. If you want to give it a try, [request early access](https://www.hocuspocus.dev).
 :::
 
 ```js
 import { Server } from '@hocuspocus/server'
-import { RocksDB } from '@hocuspocus/rocksdb'
+import { RocksDB } from '@hocuspocus/extension-rocksdb'
 
 const server = Server.configure({
   port: 80,
   extensions: [
-    new RocksDB({
-      path: './database',
-    })
+    new RocksDB({ path: './database' }),
   ],
 })