wrist cuffs & ankle cuffs -> cuffs

Aliasing wrist_cuffs -> cuffs and ankle_cuffs -> cuffs

Reason: Wrist and ankle cuff tags are specific, but both ought to be considered under a cuffs umbrella tag.

Read the cuffs wiki.
On danbooru:
cuffs restraint, bondage
wrist_cuffs, ankle_cuffs = decoration