Update app.py

app.py

@@ -113,7 +113,7 @@ def _prompt_minimal(user_prompt: str, n_shots: int, default_fps: int, default_le
         f"  \"fps\": {default_fps},\n"
         "  \"steps\": 30,\n"
         "  \"seed\": null,\n"
-        '  \"negative\": \"\"\n"
+       '  "negative": ""\n'
         "}\n"
     )