[mirotalksfu] - fix typo (Hylton)

public/js/SpeechRec.js

@@ -35,8 +35,8 @@ const commands = {
     participantsVideoOff: 'stop the participants video',
     participantsAudioOff: 'stop the participants audio',
     participantsKickOut: 'kick out the participants',
-    fileShareOn: 'open the file',
-    fileShareOff: 'close the file',
+    fileShareOn: 'open a file',
+    fileShareOff: 'close a file',
     youtubeOn: 'share the YouTube',
     youtubeOff: 'close the YouTube',
     swapCamera: 'swap the camera',