[mirotalksfu] - fix typo

public/views/Room.html

@@ -919,9 +919,11 @@ access to use this app.
                                 <div id="audio-container">
                                     <audio id="avatarPreviewAudio" controls></audio>
                                 </div>
+                                <hr />
                                 <button id="avatarVideoAIStart" class="btn-custom">
                                     <i class="fas fa-play"></i> Start Avatar Session
                                 </button>
+                                <hr />
                             </div>
                         </div>
                     </div>