Update online groups

Author: brianjester

okinawa-castles/intro.html

@@ -364,6 +364,8 @@ <h4 class="font-italic">Web Refs</h4>
           <div class="p-3">
             <h4 class="font-italic">Online Groups</h4>
             <ol class="list-unstyled">
+              <li><a href="https://www.facebook.com/groups/japanesecastles/">Japanese Castles Facebook Group</a></li>
+              <li><a href="https://www.facebook.com/groups/332922830138859/">Okinawa Hiking Group Facebook Group</a></li>
               <li><a href="https://www.facebook.com/groups/901779396572767">Hike Okinawa Facebook Group</a></li>
               <li><a href="https://www.facebook.com/groups/848477308895087">Let's Tour Okinawa Facebook Group</a></li>
               <li><a href="https://www.facebook.com/groups/ClickOkinawa">ClickOkinawa.com Facebook Group</a></li>