add description

app.py

@@ -158,6 +158,7 @@ outpaint_tab = gr.Interface(
     api_name="outpainting",
     examples=[[2, "./assets/rocket.png", 100, 0, 0, 0, "", 50, 28]],
     cache_examples=False,
+    description="it is recommended that you use https://github.com/la-voliere/react-mask-editor when creating an image mask in JS and then inverse it",
 )