Meta: link to Korean translations

Author: JinDX

index.bs

@@ -8,6 +8,7 @@ Abstract: This standard defines an interface definition language, Web IDL, that
 Abstract: are intended to be implemented in web browsers.
 Translation: ja https://triple-underscore.github.io/WebIDL-ja.html
 Translation: zh-Hans https://htmlspecs.com/webidl/
+Translation: ko https://ko.htmlspecs.com/webidl/
 Complain About: accidental-2119 no
 </pre>