Add comment about request body

app.py

@@ -128,7 +128,7 @@ def form_request_body():
 
 def predict_callback():
     """Callback function to call the prediction endpoint"""
-    request_body = form_request_body()
+    request_body = form_request_body() # Make sure we have the latest values after user input
     st.session_state.exp = None
     with st.spinner("Loading prediction and explanation..."):
         # Call the explain endpoint as it also includes the prediction