Deprecate models script - correctly set the model name for the doc file

[amyeroberts]

What does this PR do?

There was a bug in #30184, in initial model name e.g. model_name was returned as the found model doc name, instead of the one which relates to the found path.

This means, if the model name has a different hyphenation, it's config cannot be found, and therefore it is not deprecated.

This fixes the issue for certain models e.g. gptsan_japanese.

[HuggingFaceDocBuilderDev]

The docs for this PR live here. All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update.

[amyeroberts]

@ydshieh There was actually one remaining bug! I didn't catch because when I tested I wasn't using models with hyphens in the name.

[ydshieh]

OK for me, thanks.

I am not sure if we have a correspondence of model_name to model_doc_path.
If no such correspondence exist, the current zip won't be enough (which gives 3 items), and a product (which gives the 9 combinations ...) would be required.

Anyway, I might overthinking and I am not really requiring a change in this PR.

[amyeroberts]

I am not sure if we have a correspondence of model_name to model_doc_path.

@ydshieh Ah, yes, it's a bit unclear from this diff. The model name returned here is set to model_doc_name here. So the correspondence should work, because the mapping is just between the name used and the doc path.

[ydshieh]

@amyeroberts

right, thanks!