i18n(ko-KR): update internationalization.mdx

[jsparkdev]

Description (required)

• update internationalization.mdx
• 4.15.0 Minor release docs #9224

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Tracked Files

Locale	File	Note
ko	guides/internationalization.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! Amazing work!