fix: wrap GridItemEvent in list item element

Author: Wendy Sun

src/layouts/EventsLayout.astro

@@ -25,7 +25,11 @@ setJumpToState(null);
 <BaseLayout title="Events" variant="item" topic="community">
   <section>
     <ul class="content-grid-simple">
-      {entries.map((entry) => <GridItemEvent item={entry} />)}
+      {entries.map((entry) => (
+        <li>
+          <GridItemEvent item={entry} />
+        </li>
+      ))}
     </ul>
     <PaginationNav
       maxNumItems={totalNumEvents}