Fix broken docs link

docs/readme.md

@@ -1,6 +1,6 @@
 ## PeerJS Documentation
 
-We've moved! <a href="https://peerjs.com/docs">Check out our new
+We've moved! <a href="https://peerjs.com/docs.html">Check out our new
 documentation.</a>
 
 ### [Discuss PeerJS on our Telegram Channel](https://t.me/joinchat/ENhPuhTvhm8WlIxTjQf7Og)