feat: add FAQ

app.py

@@ -309,7 +309,22 @@ with demo:
                 ],
                 submission_result,
             )
+    with gr.Row():
+        with gr.Accordion("📖 FAQ", open=False):
+            with gr.Column(min_width=250):
+                        gr.Markdown("""
+            #### What does N/A score mean?
+
+            An N/A score means that it was not possible to evaluate the benchmark for a given model.
+
+            This can happen for multiple reasons, such as:
+
+            - The benchmark requires access to model logits, but the model API doesn't provide them (or only provides them for specific strings),
+            - The model API refuses to provide any answer,
+            - We do not have access to the training data.
+
 
+                                        """)
     with gr.Row():
         with gr.Accordion("📙 Citation", open=False):
             citation_button = gr.Textbox(