Make libera.chat irc link clickable (#3099)

Fix libera.chat link in markdown

README.md

@@ -10,7 +10,7 @@ The installer also doubles as a python library to install Arch Linux and manage
 
 * archinstall [discord](https://discord.gg/aDeMffrxNg) server
 * archinstall [#archinstall:matrix.org](https://matrix.to/#/#archinstall:matrix.org) Matrix channel
-* archinstall [#[email protected]](irc://#archinstall@irc.libera.chat:6697)
+* archinstall [#[email protected]:6697](https://web.libera.chat/?channel=#archinstall)
 * archinstall [documentation](https://archinstall.archlinux.page/)
 
 # Installation & Usage