directly use custom Discord invite link

static/contact.html

@@ -69,7 +69,7 @@
                     chat rooms. Our chat rooms are bridged across Discord, Telegram and Matrix so
                     you can choose your preferred platform.</p>
 
-                    <p>Discord invite link: <a href="https://grapheneos.org/discord">https://grapheneos.org/discord</a>.</p>
+                    <p>Discord invite link: <a href="https://discord.com/invite/grapheneos">https://discord.com/invite/grapheneos</a>.</p>
 
                     <p>Telegram group: <a href="https://t.me/GrapheneOS">https://t.me/GrapheneOS</a>.</p>
 

templates/footer.html

@@ -2,7 +2,7 @@
     <a href="/"><img src="[[path|/mask-icon.svg]]" width="512" height="512" alt=""/>GrapheneOS</a>
     <ul id="social">
         <li><a href="https://discuss.grapheneos.org/">Forum</a></li>
-        <li><a href="https://grapheneos.org/discord">Discord</a></li>
+        <li><a href="https://discord.com/invite/grapheneos">Discord</a></li>
         <li><a href="https://t.me/GrapheneOS">Telegram</a></li>
         <li><a href="https://matrix.to/#/%23community:grapheneos.org">#community:grapheneos.org</a></li>
         <li><a href="https://grapheneos.org/hiring">Hiring</a></li>