i18n(fr): update guides/sidebar.mdx

[HiDeoo]

What kind of changes does this PR include?

• Changes or translations of Starlight docs site content

Description

This pull request updates the french translation of the guides/sidebar.mdx file with the changes of #709 and #774.

[changeset-bot]

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Latest commit: 7e75199

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[dreyfus92]

LGTM ✅

[delucis]

Merci @HiDeoo — impeccable 🚀