i18n(fr): update guides/i18n.mdx

[HiDeoo]

What kind of changes does this PR include?

• Changes or translations of Starlight docs site content

Description

This PR updates the french version of the guides/i18n.mdx page with the changes of #1004, #1082 and #1012.

[vercel]

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Name	Status	Preview	Updated (UTC)
starlight	✅ Ready (Inspect)	Visit Preview	Nov 19, 2023 9:33am

[changeset-bot]

⚠️ No Changeset found

Latest commit: be17298

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[delucis]

ÇMSB !

I hope you also get the same kick out of seeing this component working as I do. Very cool 🙌

[HiDeoo]

I hope you also get the same kick out of seeing this component working as I do. Very cool 🙌

Oh definitely, I stopped updating this file a while ago and was patiently waiting for the day I could finally use this 😃