mass update yoko_(tactics) -> youko_(tactics)
ヨーコ was translated as Youko in the last two official english releases (Tokyopop, then JManga) for Tactics because she's a kitsune and her name is a deliberate, in-universe pun (妖狐).
EDIT: The bulk update request #1848 (forum #152013) has been approved by @Hillside_Moose.
Updated by a moderator