[APPROVED] Tag implication: off-shoulder_shirt -> off_shoulder

create implication off-shoulder_shirt -> off_shoulder

Link to implication

We ought to be consistent with off-shoulder_dress, that already has a similar implication. Also it'd allow for further flexibility with querying.

EDIT: The tag implication off-shoulder_shirt -> off_shoulder (forum #153074) has been approved by @Hillside_Moose.

The tag implication off-shoulder_shirt -> off_shoulder (forum #153074) has been approved by @Hillside_Moose.