Dokibird Outfit Mass Update

BUR #29861 has been rejected.

mass update dokibird_(vtuber)_(bounty_hunter) -feather_hair -> feather_hair

The outfit has feather_hair and no one is tagging it as so.

The feather hair is not visible on all images, you should manually garden it instead of trying to do it through a BUR

My logic is that out of the 100+ images only a handful are drawn without (e.g. post #7832662, post #7865179, etc). I figured it'd be more efficient to BUR and fix the outliers rather than tagging them all manually.

The bulk update request #29861 (forum #298019) has been rejected by @nonamethanks.