Tag Alias: senoh_chihogi -> senoo_chihogi

Aliasing senoh_chihogi -> senoo_chihogi.

Reason: And senoh_yomogi -> senoo_yomogi
From Japanese Wikipedia 妹尾千寿 （せのお ちほぎ）
妹尾蓬 （せのお よもぎ）

Edited since there was no wiki to move, it has only 31 posts and the latest is 5 months old.

I will do this one though, if only because we're never actually going to use the old tag for anything else because it doesn't follow the romanization rules.