Update templates/index.html

templates/index.html

@@ -11,7 +11,7 @@
     <div class="chat-input">
       <input type="text" id="nameInputBox" placeholder="Your Name">
       <input type="text" id="messageInputBox" placeholder="Type a message...">
-      <button onclick="postMessage()">Send</button>
+      <button onclick="postMessage(myRoomId)">Send</button>
     </div>
   </div>