[add]: machine-translation task-category

README.md

@@ -16,10 +16,9 @@ size_categories:
 - unknown
 source_datasets: []
 task_categories:
-- sequence-modeling
+- machine-translation
 task_ids:
-- language-modeling
-- sequence-modeling-other-machine-translation
+-
 ---
 
 # Dataset Card for english-korean-multitarget-ted-talks-task