Merge pull request #2901 from meibenny/update-irc-channel

Update irc channel docs

THANKS

@@ -26,6 +26,7 @@ Bartosz Oler <bartosz@bzimage.us>
 Ben Cochran <bcochran@gmail.com>
 Ben Oswald <ben.oswald@root-space.de>
 Benjamin Gilbert <bgilbert@backtick.net>
+Benny Mei <meibenny@gmail.com>
 Benoit Chesneau <bchesneau@gmail.com>
 Berker Peksag <berker.peksag@gmail.com>
 bninja <andrew@poundpay.com>

docs/site/index.html

@@ -120,9 +120,9 @@ <h1>Project Management</h1>
         </ul>
         <p>Project maintenance guidelines are available on the <a href="https://github.com/benoitc/gunicorn/wiki/Project-management">wiki</a></p>
 
-        <h1>Irc</h1>
-        <p>The Gunicorn channel is on the <a href="http://freenode.net/">Freenode</a> IRC
-          network. You can chat with the community on the <a href="http://webchat.freenode.net/?channels=gunicorn">#gunicorn channel</a>.</p>
+        <h1>IRC</h1>
+        <p>The Gunicorn channel is on the <a href="https://libera.chat/">Libera Chat</a> IRC
+          network. You can chat with the community on the <a href="https://web.libera.chat/?channels=#gunicorn">#gunicorn channel</a>.</p>
 
         <h1>Issue Tracking</h1>
         <p>Bug reports, enhancement requests and tasks generally go in the <a  href="http://github.com/benoitc/gunicorn/issues">Github