Fix docs of MNIST and its derivatives (#4579)
Fix docs of MNIST and its derivatives (#4579)

We no longer cache the data in a custom binary, but simply read from the raw data directly.

Co-authored-by: Philip Meier <8182b159cd16a0fd2cef87181d7c5a58cd09c42c@posteo.de>
pytorch/vision,pytorch/vision,pytorch/vision,pytorch/vision,pytorch/vision,pytorch/vision