point chat link to asciidoctor.org domain

Author: mojavelinux

src/partials/footer-content.hbs

@@ -7,7 +7,7 @@
     <ul class="footer-brand-links">
       <li><a href="https://asciidoctor.org" target="_blank" rel="noopener">Home</a></li>
       <li><a href="{{{or site.url siteRootPath}}}">Docs</a></li>
-      <li><a href="https://asciidoctor.zulipchat.com" target="_blank" rel="noopener">Chat</a></li>
+      <li><a href="https://chat.asciidoctor.org" target="_blank" rel="noopener">Chat</a></li>
       <li><a href="https://discuss.asciidoctor.org" target="_blank" rel="noopener">List</a></li>
       <li><a href="https://github.com/asciidoctor" target="_blank" rel="noopener">Source</a></li>
     </ul>

src/partials/header-content.hbs

@@ -90,7 +90,7 @@
             <span class="icon"><img src="{{{uiRootPath}}}/img/octicons-24.svg#view-comment-discussion"></span>
           </a>
           <div class="navbar-dropdown is-right">
-            <a class="navbar-item has-icon" href="https://asciidoctor.zulipchat.com" target="_blank" rel="noopener">
+            <a class="navbar-item has-icon" href="https://chat.asciidoctor.org" target="_blank" rel="noopener">
               <span class="icon"><img src="{{{uiRootPath}}}/img/octicons-16.svg#view-comment-discussion"></span>
               <span>Chat</span>
             </a>