Fix language and license tag names and language tags (#6)

- Fix language and license tag names and language tags (37432ad8e02ca854ec514c2df9afddb19fd1006e)

README.md

@@ -3,13 +3,14 @@ annotations_creators:
 - expert-generated
 language_creators:
 - other
-languages:
-- en-US
-- ko-KR
+language:
 - en
 - ko
-licenses:
-- cc-by-nc-nd-1.0
+language_bcp47:
+- en-US
+- ko-KR
+license:
+- cc-by-nc-nd-4.0
 multilinguality:
 - translation
 - multilingual