Update app.py

app.py

@@ -22,6 +22,7 @@ demo = gr.Interface(
         inputs="text",
         outputs="json",
         title=f"Question generate 🍩 demonstration",
+        description = 'This _example_ was **drive** from <br/><b><h4>[https://github.com/svjack/docvqa-gen](https://github.com/svjack/docvqa-gen)</h4></b>\n',
         examples=example_sample if example_sample else None,
         cache_examples = False
     )