Deep Learning 60min Blitz Audit (#3602)

Fixes [T237454992](https://www.internalfb.com/intern/tasks/?t=237454992)

## Description
The following list of tutorials was reviewed:

/beginner/deep_learning_60min_blitz
/beginner/blitz/tensor_tutorial
/beginner/blitz/autograd_tutorial
/beginner/blitz/neural_networks_tutorial
/beginner/blitz/cifar10_tutorial

All the code was run and no deprecation warnings or runtime errors were found, except for the multiprocessing error that is fixed by this PR

---------

Co-authored-by: Svetlana Karslioglu <[email protected]>

Author: jiannanWang

beginner_source/blitz/cifar10_tutorial.py

@@ -65,7 +65,8 @@
 
 ########################################################################
 # .. note::
-#     If running on Windows and you get a BrokenPipeError, try setting
+#     If you are running this tutorial on Windows or MacOS and encounter a
+#     BrokenPipeError or RuntimeError related to multiprocessing, try setting
 #     the num_worker of torch.utils.data.DataLoader() to 0.
 
 transform = transforms.Compose(