Add repo owner to doc source links

[nateraw]

While adding some reference docs to timm's Docs, I noticed the "Source" links were incorrect in the API documentation - they always pointed to github.com/huggingface/timm. We want them to point to github.com/rwightman/pytorch-image-models.

This PR aims to make that happen.

As of the time of creating this PR, there is an ambiguity between package and package_name, which still makes links generate incorrectly with package_name=timm, as the github repo name should still be pytorch-image-models. Will sort out a fix for that...

[nateraw]

@mishig25 do you think I should go with:

1. the route I'm doing here, where I'm parametrizing the repo name/repo owner (probably the right way to do it but I'll have to rewrite some tests and I'm afraid something in another repo will break)
2. Just adding explicit override when package name is pytorch-image-models to update github links/package name (in which case I close this PR and make a much smaller, simpler one to hack around this)

[nateraw]

@sgugger mind having a look at this and weighing in on the above?

[sgugger]

Thanks for working on this. I think it's better to parametrize everything, just in case we end up re-using the doc-builder for other repos outside of huggingface, like bigscience (and since you have done most of the work already ;-) )

[nateraw]

@sgugger, I think we're good to go here 🤞 I made updates to reflect your review comments (thanks so much!!)

I'll need to remove hard coded references to this PR's branch in the GitHub actions before we merge, though... needed to add that so I could work on huggingface/pytorch-image-models#1575.

[mishig25]

@nateraw, if I go to this preview page & click on one of the source links, for example:
https://github.com/rwightman/pytorch-image-models/blob/vr_1575/src/timm/optim/optim_factory.py#L176

it should not have, string src & just be:
https://github.com/rwightman/pytorch-image-models/blob/vr_1575/timm/optim/optim_factory.py#L176

if it does not have src & if you replace manually vr_1575 with main, the link works

[sgugger]

LGTM, once @mishig25 's bug is fixed of course :-)

[nateraw]

@mishig25 nice catch! I added the version_tag_suffix build arg to the workflows so I can pass it through from timm. Links look good now in that preview link you shared 😄 .

[mishig25]

lgtm !