Update app.py

adding form link

app.py

@@ -169,6 +169,7 @@ To submit your results in one of the three tasks, please follow the steps below:
                         
 ## Submit your model to the leaderboard in the ``Model Submission`` tab
 When your API is deployed : 
+0. Fill out the [submission form](https://framaforms.org/2025-frugal-ai-challenge-submission-form-1736883260-0) with all the details regarding your team and project.
 1. Select the task you want to submit your model to
 2. Enter the Space URL of your API
 3. (Optional) Precise the API route (default is ``/text``, ``/image``, or ``/audio``)