📝 Use return type annotation instead of response_model when possible (#14753)

docs_src/path_operation_configuration/tutorial003_py310.py

@@ -14,9 +14,8 @@ class Item(BaseModel):
 
 @app.post(
     "/items/",
-    response_model=Item,
     summary="Create an item",
     description="Create an item with all the information, name, description, price, tax and a set of unique tags",
 )
-async def create_item(item: Item):
+async def create_item(item: Item) -> Item:
     return item