Fixing indentation issues

app.py

@@ -51,10 +51,10 @@ with gr.Blocks() as iface:
         api_key_input,
     )
 
-   submit_button.click(
-       agent_fn,
-       [prompt_input, model_name_dropdown, api_key_input],
-       response_output,
-   ) 
+    submit_button.click(
+        agent_fn,
+        [prompt_input, model_name_dropdown, api_key_input],
+        response_output,
+    )
 
 iface.launch()