i18n(ko-KR): update typescript.mdx

[jsparkdev]

Description (required)

• update typescript.mdx
• Remove all mentioned jsconfig #8818
• fix typo
• update broken links

Related issues & labels (optional)

• Closes #
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Tracked Files

Locale	File	Note
ko	guides/migrate-to-astro/from-create-react-app.mdx	Localization changed, will be marked as complete.
ko	guides/migrate-to-astro/from-gatsby.mdx	Localization changed, will be marked as complete.
ko	guides/migrate-to-astro/from-nextjs.mdx	Localization changed, will be marked as complete.
ko	guides/migrate-to-astro/from-nuxtjs.mdx	Localization changed, will be marked as complete.
ko	guides/typescript.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 work!