Update app.py

app.py

@@ -74,7 +74,7 @@ with gr.Blocks() as demo:
         with gr.Column(variant="panel"):
             output_b = gr.HTML(label="Result for text B", show_label=True)
     with gr.Row():
-        submit_btn = gr.Button(label="Generate Diff")
+        submit_btn = gr.Button(value="Generate Diff")
         submit_btn.click(
             fn=generate_diff,
             inputs=[text_a, text_b, method],