update button name

app.py

@@ -222,13 +222,13 @@ with gr.Blocks(theme=gr.themes.Soft()) as demo:
 
     emptyBtn.click(reset_state, outputs=[chatbot, history, past_key_values], show_progress=True)
 
-    regenerate_button.click(
+    retryBtn.click(
         retry_last_answer, 
         inputs = [user_input, chatbot, max_length, top_p, temperature, history, past_key_values],
         #outputs = [chatbot, history, last_user_message, user_message]
         outputs=[chatbot, history, past_key_values]
         )
-    delete_turn_button.click(delete_last_turn, [chatbot, history], [chatbot, history])
+    deleteBtn.click(delete_last_turn, [chatbot, history], [chatbot, history])
     
     with gr.Accordion("For Translation API", open=False):
         input_text = gr.Text()