i18n(zh-cn): update astro-syntax.mdx & directives-reference.mdx

[liruifengv]

Description (required)

update astro-syntax.mdx & directives-reference.mdx

Related issues & labels (optional)

• Add additional explanation about define:vars directive #8585
• Closes #
• Suggested label:

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Name	Status	Preview	Updated (UTC)
docs	✅ Ready (Inspect)	Visit Preview	Jun 20, 2024 4:37am

[astrobot-houston]

Lunaria Status Overview

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By default, every PR changing files present in the Lunaria configuration's files property will be considered and trigger status changes accordingly.

You can change this by adding one of the keywords present in the ignoreKeywords property in your Lunaria configuration file in the PR's title (ignoring all files) or by including a tracker directive in the merged commit's description.

Tracked Files

Locale	File	Note
zh-cn	basics/astro-syntax.mdx	Localization changed, will be marked as complete.
zh-cn	reference/directives-reference.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.

[Nin3lee]

LGTM!

[liruifengv]

Thank you @Nin3lee