I feel like some of these should point to the hosted docs instead, like references to tensor.py and nn

Im more than happy to change if something is not correct :)
But i believe the hosted docs are .md files, like: https://github.com/tinygrad/tinygrad/blob/master/docs/tensor.md and the links touched here are only .py and from context it makes some sense. They also point to subfolders like tinygrad/tensor.py for example or tinygrad/nn/__init__.py

I think it might be better to rewrite them to point to the tensor.md docs since that's the docs that are nicer for new users.

This branch currently is behind tinygrad/master. The line count difference bot is disabled.

thanks, updated with nn.md and tensor.md. but kept one for tensor where the example copied the sparse_categorical_crossentropy() function