fix name id of video

youtube/templates/watch.html

@@ -273,9 +273,9 @@
                      }
                  });
 
+                 const vid = document.getElementById('js-video-player');
                  if(!playability_error){
                      // play the video if autoplay is on
-                     let vid = document.querySelector('video');
                      if(autoplayEnabled){
                          vid.play();
                      }