Fix typo in ticket section

Author: qPalee

index.html

@@ -26,7 +26,7 @@ <h3>Welcome to birmingHack!</h3>
 <div id="tickets" class="tickets section">
   <div class="tickets-description">
     {% if page.tickets.released %}
-      {% if page.ticket.available %}
+      {% if page.tickets.available %}
         <p class="tickets-title"><i class="fa-solid fa-ticket"></i> Tickets now available!</p>
         <p>
           You can now register for birmingHack 2026! Please note that tickets are limited, so make sure to register as soon as possible.