Update README.md

To help with the referencing of the dataset, only the xx language tags are currently taken into account and not the xx-xx

README.md

@@ -6,6 +6,8 @@ language_creators:
 languages:
 - en-US
 - ko-KR
+- en
+- ko
 licenses:
 - cc-by-nc-nd-1.0
 multilinguality: