Old tutorials with broken layouts

[mthrok]

#1265 moved two_layer_net tutorials

I noticed that the old tutorials are still accessible and layout is broken.
They are the top results from Google search.
They should redirect to the new ones.

https://pytorch.org/tutorials/beginner/examples_nn/two_layer_net_nn.html
https://pytorch.org/tutorials/beginner/examples_nn/two_layer_net_module.html
https://pytorch.org/tutorials/beginner/examples_nn/two_layer_net_optim.html
https://pytorch.org/tutorials/beginner/examples_autograd/two_layer_net_autograd.html
https://pytorch.org/tutorials/beginner/examples_autograd/two_layer_net_custom_function.html
https://pytorch.org/tutorials/beginner/examples_autograd/tf_two_layer_net.html

cc @pytorch/team-audio-core

[svekars]

Marking as resolved