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* Rename index.mdx to index.md

* With saved modifs

* Address review comment

* Treat all files

* .mdx -> .md

* Remove special char

* Update utils/tests_fetcher.py
Co-authored-by: Lysandre Debut <lysandre.debut@reseau.eseo.fr>

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Co-authored-by: Lysandre Debut <lysandre.debut@reseau.eseo.fr>

* Add ConvNeXt V2 to transformers
* TF model is separated from the PR to fix issues

* Update _toctree and clone original content

* Translate first three sections

* Add more translated chapters. Only 3 more left.

* Finish translation

* Run style from doc-builder

* Address recommended changes from reviewer