feat: Add gamejam callout (#82)

Author: luanpotter

_includes/callout.html

@@ -1,9 +1,7 @@
-{% comment %}
 <div class="main-border w-full">
     <div class="main-border-inner p-4">
         <p class="text-center">
-            Our <a class="link" href="https://itch.io/jam/flame-jam-2025">Flame Game Jam 2025</a> is happening on 19-28th of April on itch.io! You do not want to miss it!
+            Our <a class="link" href="https://itch.io/jam/flame-game-jam-2026">Flame Game Jam 2026</a> is happening on 6-15th of March on itch.io! You do not want to miss it!
         </p>
     </div>
 </div>
-{% endcomment %}