📝 Add return type annotations to path params tutorial example

docs_src/path_params/tutorial003_py310.py

@@ -4,10 +4,10 @@ app = FastAPI()
 
 
 @app.get("/users/me")
-async def read_user_me():
+async def read_user_me() -> dict:
     return {"user_id": "the current user"}
 
 
 @app.get("/users/{user_id}")
-async def read_user(user_id: str):
+async def read_user(user_id: str) -> dict:
     return {"user_id": user_id}