Update app.py

app.py

@@ -94,7 +94,7 @@ def postprocess(txt, path):
 
 with gr.Blocks() as demo:
     chatbot_box = gr.Chatbot(type="messages", render_markdown=False, sanitize_html=False)
-    prefix_box = gr.Textbox(value=default_prefix, label="prefix")
+    prefix_box = gr.TextArea(value=default_prefix, label="prefix")
     with gr.Row():
         submit_btn = gr.Button("Submit")
         clear_btn = gr.Button("Clear")