[mirotalksfu] - fix typo

public/js/Room.js

@@ -969,7 +969,7 @@ function roomIsReady() {
     BUTTONS.settings.host_only_recording && show(roomRecording);
     BUTTONS.main.aboutButton && show(aboutButton);
     if (!DetectRTC.isMobileDevice) show(pinUnpinGridDiv);
-    if (!isSpeechSynthesisSupported) hide(speechIncomingMsg);
+    if (!isSpeechSynthesisSupported) hide(speechMsgDiv);
     handleButtons();
     handleSelects();
     handleInputs();