Update README.md to include ISO codes for available languages (#1)

- Update README.md to include ISO codes for available languages (0fea4799cf705c468e3d8f65ef4ab1abbdea6044)


Co-authored-by: Matthew A Hernandez <[email protected]>

README.md

@@ -3,4 +3,7 @@ task_categories:
 - translation
 size_categories:
 - 1M<n<10M
+language:
+- en
+- bn
 ---