Update _index.md

_index.md

@@ -34,6 +34,7 @@ Spare me the details just give me the links to the docs!
 ### Community
   - [IRC](https://en.wikipedia.org/wiki/Internet_Relay_Chat): [`freenode.net#card10badge`](ircs://chat.freenode.net:6697/card10badge)
   - mirrored to [Matrix](https://en.wikipedia.org/wiki/Matrix_(protocol)) (mirror): [`#card10badge:asra.gr`](https://matrix.to/#/#card10badge:asra.gr)
+    - If you can please join via IRC directly. Bridging IRC channels to Matrix is unreliable at best.
   - [GitLab: `https://git.card10.badge.events.ccc.de`](https://git.card10.badge.events.ccc.de/explore/groups/)
 
 You can [browse](https://git.card10.badge.events.ccc.de/card10/logix) this wiki's source and [read more](/firmware/gitlab) about our GitLab instance.