Revert "Update ko_KR.lang"

This reverts commit 60e7ca8daf04655c15b7295bb598cb8dd172ad20.
Revert "Update ko_KR.lang"

This reverts commit 06535bdd12b1fb0bd32cd77e46e472182c68b056.
Revert "Revert "Update ko_KR.lang""

This reverts commit 2dc0fcc1063cef8b66c15763795c80d7301738ee.