Update app.py

app.py

@@ -289,7 +289,10 @@ with gr.Blocks() as demo:
     gr.Markdown(description_text)
     
     with gr.Row():
-        playlist_url = gr.Textbox(label="Spotify Playlist URL")
+        playlist_url = gr.Textbox(
+            label="Spotify Playlist URL",
+            placeholder="e.g. https://open.spotify.com/playlist/1zgenIMomxFp4irGwgW4Rb"
+        )
     with gr.Row():
         sp_client_id = gr.Textbox(label="Spotify Client ID (optional)")
         sp_client_secret = gr.Textbox(label="Spotify Client Secret (optional)")