📝 Update docs, compare enums with identity instead of equality (#4905)

docs_src/path_params/tutorial005.py

@@ -14,7 +14,7 @@ app = FastAPI()
 
 @app.get("/models/{model_name}")
 async def get_model(model_name: ModelName):
-    if model_name == ModelName.alexnet:
+    if model_name is ModelName.alexnet:
         return {"model_name": model_name, "message": "Deep Learning FTW!"}
 
     if model_name.value == "lenet":