Update tools/download_music.py

tools/download_music.py

@@ -37,7 +37,7 @@ class DownloadSomeMusicMeastro(Tool):
                     "preferredcodec": "mp3",
                     "preferredquality": "192"
                 }],
-                "progress_hooks": [my_hook]
+                "progress_hooks": [my_hook],
                 "cookies-from-browser": chrome
             }
         }