l10n: Updated Korean (ko) translation to 100%

New status: 387 messages complete with 0 fuzzies and 0 untranslated.

Transmitted-via: Transifex (translations.xfce.org).

po/ko.po

@@ -657,7 +657,7 @@ msgstr "모양새(_N):"
 
 #: ../plugins/actions/actions-dialog.glade.h:5
 msgid "Invert buttons _orientation"
-msgstr "화살표 단추 위치(_O):"
+msgstr "단추 방향 뒤집기(_O):"
 
 #: ../plugins/actions/actions-dialog.glade.h:6
 msgid "Session Menu"