i18n(ko-KR): update configuration-reference.mdx, images docs

[jsparkdev]

Description (required)

• 5.10.0 Minor release docs #11901
• ci: update configuration reference docs #11911

Updates configuration-reference.mdx, images.mdx, astro-assets.mdx

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Tracked Files

File	Note
ko/guides/images.mdx	Localization changed, will be marked as complete.
ko/reference/configuration-reference.mdx	Localization changed, will be marked as complete.
ko/reference/modules/astro-assets.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.

[yanthomasdev]

LGTM! Good job!