fix: wrap calendar buttons in <p>s

Author: phette23

_includes/homepage/peri_conference.html

@@ -39,8 +39,8 @@ <h2>Need help?</h2>
     </div>
     <div class="col-md-6 text-center">
         <h2>Add to your calendar</h2>
-        <a href="/ics/livestream.ics" class="btn ct-btn-light btn-lg">Livestreamed Events</a>
-        <a href="/ics/in-person.ics" class="btn ct-btn-light btn-lg">In-Person Events</a>
+        <p><a href="/ics/livestream.ics" class="btn ct-btn-light btn-lg">Livestreamed Events</a></p>
+        <p><a href="/ics/in-person.ics" class="btn ct-btn-light btn-lg">In-Person Events</a></p>
     </div>
 </div>