website(directory): add bot address, open simplex links in new tab, improve error handling

website/src/directory.html

@@ -256,7 +256,7 @@ templateEngineOverride: njk
     <h1 class="text-[38px] text-center font-bold text-active-blue mb-8">SimpleX Directory</h1>
     <p>Welcome to the selected users' communities that you can join via <a href="/downloads">SimpleX Chat
         app</a>.</p>
-    <p>SimpleX Directory is also available as a <a>SimpleX chat bot</a>.</p>
+    <p>SimpleX Directory is also available as a <a href="https://smp4.simplex.im/a#lXUjJW5vHYQzoLYgmi8GbxkGP41_kjefFvBrdwg-0Ok" target="_blank">SimpleX chat bot</a>.</p>
     <p>Read about <a href="/docs/directory.html">how to add</a> your community</a>.</p>
     <div class="search-container">
       <input id="search">