i18n(ja) : update editor-setup.mdx

[fkatsuhiro]

Description (required)

Update along with these commits

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• Suggested label: i18n

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ja/editor-setup.mdx	Localization changed, will be marked as complete.

Warnings reference

Icon	Description
🔄️	The source for this localization has been updated since the creation of this pull request, make sure all changes in the source have been applied.

[Yusaku01]

Support for .astro markup_fmt プラグインを使用することで、.astroファイルのサポートを追加できます。

Support for ...の部分が理解難しいかもなので、以下のように文章構成ごと変えていただいた方が、個人的に綺麗かなと思いました🤔

.astroファイルのサポートは、markup_fmt プラグインを使用して追加できます。

[Yusaku01]

@fkatsuhiro さん

Thank you so much for this translation PR! 🚀

I really appreciate your contribution. I’ve reviewed the content and applied some refinements to align it with our style guide and ensure technical accuracy.

PRの作成ありがとうございます！！好みによるもの多々含みますが、いくつかレビュー&コメント追加させていただきました。お手隙にご確認いただけますと幸いです🙏

サマリは以下の通りです。詳細に関しては、コメントをご確認いただければ🙏

• 変更必要な箇所かどうかの確認
• 冗長表現の確認
• 追加で修正必要箇所の提案

[jp-knj]

LGTM

[yanthomasdev]

LGTM! Thanks!