https://nixos.org/community/index.html still refers to #nixos on freenode, which [we're moving away from](https://discourse.nixos.org/t/join-us-on-matrix-at-nix-nixos-org-migrating-from-freenode/13166/20). We should update it to point to our Matrix rooms / space.
https://nixos.org/community/index.html still refers to #nixos on freenode, which we're moving away from. We should update it to point to our Matrix rooms / space.