Update app.py

app.py

@@ -59,9 +59,8 @@ def get_recent_tracks(user: str) -> str:
 
     Environment Variables:
         LASTFM_API_KEY : API key for authenticating with the Last.fm API.
-        LASTFM_API_ROOT: Base URL for the Last.fm API endpoint (e.g., "http://ws.audioscrobbler.com/2.0/").
 
-    Parameters:
+    Args:
         user: The Last.fm username for which to retrieve the recent track information.
                     Must be a non-empty string.