Fix typo: bronse -> bronze

Author: champierre

index.html

@@ -163,7 +163,7 @@ <h3 class="text-center">Silver</h3>
       </a>
     </div>
   </div>
-  <h3 class="text-center">Bronse</h3>
+  <h3 class="text-center">Bronze</h3>
   <div class="row">
     <div class="col-6 col-md-4 col-lg-3">
       <a href="https://www.communitycom.jp/" target="_blank">