add temporary email description

data/web/lang/lang.ko-kr.json

@@ -911,6 +911,7 @@
         "create_syncjob": "새 동기화 작업 생성",
         "daily": "매일",
         "day": "일",
+        "description": "Description",
         "delete_ays": "진짜 삭제하겠습니까?",
         "direct_aliases": "Direct alias addresses",
         "direct_aliases_desc": "Direct alias addresses are affected by spam filter and TLS policy settings.",
@@ -1020,4 +1021,4 @@
         "session_token": "Form token invalid: Token mismatch",
         "session_ua": "Form token invalid: User-Agent validation error"
     }
-}
+}