Link to Libera, Matrix instead of Freenode

The project has moved away from Freenode as an IRC network[1], and there
is now a quite large channel on Libera.  As such, we should point users
towards that instead.

This also changes all examples to refer to libera instead of freenode
as, with the recent deletion of all freenode channels, it is perhaps
where most communities are to be found nowadays.

Finally, also link to the official Matrix room[2] as an alternative to
IRC.

Related: https://github.com/NixOS/nixpkgs/pull/129384

[1]: https://discourse.nixos.org/t/join-us-on-matrix-at-nix-nixos-org-migrating-from-freenode
[2]: https://github.com/NixOS/rfcs/pull/94

1 files changed, 1 insertions, 1 deletions

diff --git a/doc/builders/packages/weechat.section.md b/doc/builders/packages/weechat.section.md
index 1d99b00e632..e4e956b908e 100644
--- a/doc/builders/packages/weechat.section.md
+++ b/doc/builders/packages/weechat.section.md
@@ -41,7 +41,7 @@ weechat.override {
   configure = { availablePlugins, ... }: {
     init = ''
       /set foo bar
-      /server add freenode chat.freenode.org
+      /server add libera irc.libera.chat
     '';
   };
 }