Update app.py

Added clearer warning symbols in the gradio app. This might be especially important for the automatic data opt-in system

app.py

@@ -311,9 +311,9 @@ with gr.Blocks() as demo:
 
             We'd love your feedback! Please indicate whether you agree or disagree with Vera's prediction (and don't mind the percentage numbers). If you're unsure or the statement doesn't have a certain correctness label, please select "Uncertain". If your input is actually not a statement about commonsense, please select "I don't think this is a statement about commonsense".
 
-            ⚠️ **Intended Use**: Vera is a research prototype and may make mistakes. Do not use for making critical decisions. It is intended to predict the correctness of commonsense statements, and may be unreliable when taking input out of this scope.
+            :warning: **Intended Use**: Vera is a research prototype and may make mistakes. Do not use for making critical decisions. It is intended to predict the correctness of commonsense statements, and may be unreliable when taking input out of this scope.
 
-            ⚠️ **Data Collection**: By default, we are collecting the inputs entered in this app to further improve and evaluate the model. Do not share any personal or sensitive information while using the app! You can opt out of this data collection by removing the checkbox below:
+            :warning: **Data Collection**: By default, we are collecting the inputs entered in this app to further improve and evaluate the model. Do not share any personal or sensitive information while using the app! You can opt out of this data collection by removing the checkbox below:
             '''
         )
         with gr.Row():