[docs] torch.histc docs mention min/max have int type

[vadimkantorov]

https://pytorch.org/docs/master/torch.html?highlight=histc#torch.histc:

min (int) – lower end of the range (inclusive)
max (int) – upper end of the range (inclusive)

I think this is erroneous, the type should be float and also to accept PyTorch scalar type (as it can be common to write min = bins_tensor.min(), max = bins_tensor.max())

[vadimkantorov]

Also, it's a bit strange that histc returns integer counts but as float dtype.

[ngimel]

Thank you for your bug report! Would you mind sending a PR to fix documentation? And I agree, returning counts as floats is strange.

[vadimkantorov]

I'll try to do a PR, but don't promise doing that super-fast :/ It'd be my first PR to docs.

Also I checked, min/max accept PyTorch scalars, but not sure if/how that should be formulated in docs.

[vadimkantorov]

@ngimel Should I open a separate issue about histc returning float values?