Update app.py

app.py

@@ -185,7 +185,7 @@ with gr.Blocks(title="chatsPDFsupport", theme=gr.themes.Ocean()) as app:
             )
 
         #submit button 
-        sumbit_button= gr.Button("Submit Question")
+        submit_button = gr.Button("Submit Question")
  
        # Event handlers
     def update_preview(text):