Standardizing Kyoko's Parents

BUR #34597 is pending approval.

create alias kyouko's_father_(madoka_magica) -> kyoko's_father_(madoka_magica)
create alias kyouko's_mother_(madoka_magica) -> kyoko's_mother_(madoka_magica)

These tags never got renamed to fit the romanization we currently use for Sakura Kyoko, making them a pain in the ass to search for. This BUR seeks to correct this.

Why don't these use Sakura Kyoko's full name instead of her first name and a qualifier in the first place? Why is Madoka Magica's naming convention for these parent characters (*'s_mother_(madoka_magica), *'s_father_(madoka_magica)) so different from everyone else's (*'s_mother, *'s_father)?