Update contact info

Author: zdohnal

_pages/contact.md

@@ -13,17 +13,20 @@ author_profile: false
 <strong>Important:</strong> We protect the e-mail addresses of our mentors and mailing lists against spam bots. Please replace all occurrences of “ at ” and “ dot ” by “@” and “.” resp.
 </p>
 <div>
-    <h1>Mailing List:</h1>
+    <h1>Mailing Lists:</h1>
     <p>
+        The lists were moved to the mail server <a href="https://subspace.kernel.org/lists.linux.dev.html">list.linux.dev</a>.
         <ul>
-            <li><a href="https://lists.linux-foundation.org/mailman/listinfo/printing-architecture" title="http://lists.linux-foundation.org/mailman/listinfo/printing-architecture"  rel="nofollow">Architecture</a></li>
+            <li><a href="https://lore.kernel.org/printing-architecture/" title="https://lore.kernel.org/printing-architecture/"  rel="nofollow">Architecture</a></li>
+            <hr>
+            <li><a href="https://lore.kernel.org/printing-users/" title="https://lore.kernel.org/printing-users/"  rel="nofollow">Users</a></li>
             <hr>
         </ul>
     </p>
     <p>
-        <h1><abbr title="Internet Relay Chat">IRC:</abbr></h1>
+        <h1>Telegram</h1>
         <ul>
-            <li>#openprinting on libera.chat</li>
+            <li><a href="https://t.me/+RizBbjXz4uU2ZWM1" title="Join our Telegram chat.">OpenPrinting chat</a></li>
         </ul> 
     </p> 
     <h1>GitHub</h1>
@@ -32,4 +35,4 @@ author_profile: false
         <li><a href="https://github.com/OpenPrinting" title="https://github.com/OpenPrinting"  rel="nofollow">OpenPrinting GitHub</a></li>
         </ul>
     </p>
-</div>
+</div>