fix MetaCLIP 2 wrong link & wrong model names in the docstrings

[voidism]

What does this PR do?

The new model support for MetaCLIP 2 is done, but the documentation is with the wrong links and wrong model names.
The issue is already mentioned by @howardhsu in #39826 (comment)_

just realized the example code in the documentation has invalid path openai/metaclip_2-vit-base-patch32, should be facebook/metaclip-2-worldwide-huge-quickgelu ?

@NielsRogge tried to fix it in #39826 (comment)_ but it seems not trivial to fix because the modular model converter caused it.

Also, as mentioned by @ArthurZucker in #39826 (comment)_

You can probably just overwrite the full docstring for now, there are no better solutions I think

I just finished exactly what @ArthurZucker suggested to overwrite the full docstring! 🤗

I didn't modify any functionality other than the docstrings.

Fixes #39826

Before submitting

• This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case).
• Did you read the contributor guideline,
  Pull Request section?
• Was this discussed/approved via a Github issue or the forum? Please add a link
  to it if that's the case.
• Did you make sure to update the documentation with your changes? Here are the
  documentation guidelines, and
  here are tips on formatting docstrings.
• Did you write any new necessary tests?

Who can review?

@ArthurZucker @howardhsu @NielsRogge

Documentation: @stevhliu

[github-actions]

[For maintainers] Suggested jobs to run (before merge)

run-slow: metaclip_2

[voidism]

Hi @NielsRogge !

I am the first author of MetaCLIP 2, and I just wanted to fix some errors on the model names in the documentation of MetaCLIP 2. Can you help me on reviewing this PR? Thanks so much!

[Rocketknight1]

run-slow: metaclip_2

[github-actions]

This comment contains run-slow, running the specified jobs:

models: ['models/metaclip_2']
quantizations: [] ...

[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.

[Rocketknight1]

Hi @voidism, sorry for the delay! I'm happy to approve this one quickly - the links are clearly broken in the existing code. If the relevant maintainers have any issues, they can ping me here when they get back and I can open a follow-up PR to fix it.

[voidism]

Hi @Rocketknight1 –it looks great to me! Thanks a lot for your help!

[NielsRogge]

Thanks @voidism for taking this up!

[voidism]

@NielsRogge Thank you for integrating MetaCLIP 2 into HF!