Update app.py

trying like this

app.py

@@ -237,8 +237,8 @@ The goal of the Frugal AI Challenge is to encourage both academic and industry a
                 with gr.Column(scale=1):
                     text_submit_btn = gr.Button("2. Submit to public leaderboard (optional)", variant="secondary")
                 with gr.Column(scale=1):
-                    text_form = gr.Button("3. Submit to final evaluation [form](https://framaforms.org/2025-frugal-ai-challenge-submission-form-1736883260-0)", variant="secondary")
-                    
+                    text_form = gr.Button(value="3. Submit to final evaluation form", link="https://framaforms.org/2025-frugal-ai-challenge-submission-form-1736883260-0")
+        
             with gr.Row():
                 text_accuracy = gr.Number(label="Accuracy", precision=4)
                 text_energy = gr.Number(label="Energy Consumed (Wh)", precision=12)