Misleading call of 'iter' in the 'WrappedDataLoader'

[sadra-barikbin]

tutorials/beginner_source/nn_tutorial.py

Line 776 in 796013c

batches = iter(self.dl)

There is no need to call iter in this line and that is misleading. Internally, by calling iter an _BaseDataLoaderIter instance is returned. Then in the for loop, again iter is called by the interpreter and the same instance is returned. So there is no need to that call.

cc @suraj813

[HemanthSai7]

/assigntome

[HemanthSai7]

Whom do I tag in the PR?