Update app.py

app.py

@@ -46,7 +46,7 @@ def get_users_name(favorite_animal: str, favorite_food: str) -> str:
     """
     name = []
     for first, last in zip(favorite_animal, favorite_food):
-        name.extend(first, last.lower())
+        name.extend([first, last.lower()])
     return "".join(name)