Fix the XMPP address in the subscribe to updates section in the footer of the website.

website/layouts/index.html

@@ -162,7 +162,7 @@
                 </svg>
                 <span class="get-in-touch">{{i18n "matrix"}}</span>
             </a>
-            <a href="xmpp:sfcamp-dived-orgatm@groups.poddery.com?join" target="_blank" rel="noopener" title="XMPP">
+            <a href="xmpp:sfcamp2021-dived@groups.poddery.com?join" target="_blank" rel="noopener" title="XMPP">
                 <svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 1536 1792">
                     <path stroke="#fff" stroke-width="12.189" fill="#ffffff" d="M1536.002 222.059l-92.61 30.869-274.275 81.267c1.22 15.846 1.219 31.692 1.219 48.756 0 300.516-152.673 667.163-406.229 929.072-246.573-261.01-394.58-620.998-394.58-916.882 0-17.065.002-32.91 1.221-48.756l-273.039-80.9c.001-.25.008-.52.008-.766L5.082 231.81c-44.84 387.494 210.421 895.362 636.547 1191.819-117.051 93.505-250.003 164.663-395.209 201.367v28.033c72.485-9.02 142.62-23.092 210.227-41.625 104.198-26.196 203.938-66.072 297.779-116.67a1415.295 1415.295 0 0 0 40.765 22.281c1.91 1.004 3.823 1.998 5.737 2.993.414.215.827.433 1.242.648a1331.627 1331.627 0 0 0 30.285 15.215c141.163 68.79 295.978 114.462 460.988 128.129v-26.817c-153.031-38.682-292.45-115.632-413.992-216.68 450.875-294.71 703.503-800.224 656.551-1198.444z"/>
                 </svg>