docs: move translations to i18n

[SauravMaheshkar]

What does this PR do?

Fixes #31542

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• This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case).
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Who can review?

Request for Review: @stevhliu

[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.

[stevhliu]

Thanks for moving the README.md translations to their own separate folder, LGTM! The main repo should look cleaner now :)

Pinging @amyeroberts @LysandreJik for a quick look before we merge.

[amyeroberts]

LGTM - thanks for handling!

Agreed, let's double check with @LysandreJik here re the structural change

[LysandreJik]

LGTM! Thanks for the PR!