docs: fix chat url (#550)

README.md

@@ -5,10 +5,10 @@
 <h3 align="center">The JavaScript implementation of the libp2p Networking Stack.</h3>
 
 <p align="center">
-  <a href="http://ipn.io"><img src="https://img.shields.io/badge/made%20by-Protocol%20Labs-blue.svg?style=flat-square" /></a>
+  <a href="http://protocol.ai"><img src="https://img.shields.io/badge/made%20by-Protocol%20Labs-blue.svg?style=flat-square" /></a>
   <a href="http://libp2p.io/"><img src="https://img.shields.io/badge/project-libp2p-yellow.svg?style=flat-square" /></a>
   <a href="http://webchat.freenode.net/?channels=%23libp2p"><img src="https://img.shields.io/badge/freenode-%23libp2p-yellow.svg?style=flat-square" /></a>
-  <a href="https://riot.permaweb.io/#/room/#libp2p:permaweb.io"><img src="https://img.shields.io/badge/matrix-%23libp2p%3Apermaweb.io-blue.svg?style=flat-square" /> </a>
+  <a href="https://riot.im/app/#/room/#libp2p:matrix.org"><img src="https://img.shields.io/badge/matrix-%23libp2p%3Apermaweb.io-blue.svg?style=flat-square" /> </a>
   <a href="https://discord.gg/66KBrm2"><img src="https://img.shields.io/discord/475789330380488707?color=blueviolet&label=discord&style=flat-square" /></a>
   <a href="https://discuss.libp2p.io"><img src="https://img.shields.io/discourse/https/discuss.libp2p.io/posts.svg" /></a>
 </p>