fix: typo of jupyter notebook hyper-link name

Author: Baichuan Sun

README.md

@@ -514,7 +514,7 @@ user    0m0.280s
 sys     0m0.039s
 ```
 
-For more details about TorchServe setup and usage, please refere to `notebook/04_SageMaker.ipynb` [[link](notebook/03_TorchServe.ipynb)].
+For more details about TorchServe setup and usage, please refere to `notebook/03_TorchServe.ipynb` [[link](notebook/03_TorchServe.ipynb)].
 
 ## Deployment to Amazon SageMaker Inference Endpoint