Tag Alias: kohsan_ -> kohsan

Aliasing kohsan_ -> kohsan.

Reason: For some reason this artist's tag includes an underscore at the end. This is easy to forget, particularly since it doesn't display when looking at the list of tags for an image.

There aren't very many images, so a simple renaming might be enough.

oh ya. i innitially tagged them as Kohsan_ cause that was the twitter name at the time. really no point in having the space now, since they changed their twitter to kohsa_ now.

Moved to kousa_(black_tea).