Switch IRC channel to Libera Chat.

README.md

@@ -20,7 +20,7 @@ documentation and other resources.**
 User groups (all connected thanks to [Matrix](https://matrix.org)):
 [![Gitter](https://img.shields.io/badge/gitter-elves/elvish-blue.svg?logo=gitter-white)](https://gitter.im/elves/elvish)
 [![Telegram Group](https://img.shields.io/badge/telegram-@elvish-blue.svg)](https://telegram.me/elvish)
-[![#elvish on freenode](https://img.shields.io/badge/freenode-%23elvish-blue.svg)](https://webchat.freenode.net/?channels=elvish)
+[![#elvish on libera.chat](https://img.shields.io/badge/libera.chat-%23elvish-blue.svg)](https://web.libera.chat/#elvish)
 [![#users:elves.sh](https://img.shields.io/badge/matrix-%23users:elv.sh-blue.svg)](https://matrix.to/#/#users:elves.sh)
 
 ## Building Elvish

website/home.md

@@ -143,7 +143,7 @@ to [Matrix](https://matrix.org)!
 
 -   Telegram: [@elvish](https://telegram.me/elvish)
 
--   IRC: [#elvish](https://webchat.freenode.net/?channels=elvish) on Freenode
+-   IRC: [#elvish](https://web.libera.chat/#elvish) on Libera Chat
 
 -   Gitter: [elves/elvish](https://gitter.im/elves/elvish)