i18n(ko-KR): create `cards.mdx` #7498

Job	Run time
changes	3s
Run type checks	28s
Check for accessibility issues	2m 17s
Docs site builds on Windows	1m 48s
Check for broken links	1m 16s
Run unit tests	0s
Run E2E tests (${{ matrix.os }})	0s
	5m 52s

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