Update main.py

main.py

@@ -22,7 +22,10 @@ app = FastAPI()
 
 @app.get("/")
 def read_root():
-    return {"Hello": "World!"}
+    data = """
+    <p>This is a demo app showing how to use webhooks to automate metadata review for models and datasets shared on the Hugging Face Hub.</p>
+    """
+    return Response(content=data, media_type="text/html")
 
 
 def similar(a, b):