Tag alias: knees_together_feet_together -> legs_together

create alias knees_together_feet_together -> legs_together

Link to alias

If there's a meaningful difference between these tags, I can't see it. I went with keeping the shorter tag for ease of use, but either would work, really.

If there's going to be an alias, I think it should be the other way around so that the tag stays parallel with knees_together_feet_apart, for which there's no other name.

if we're going that route, legs_* has several tags that it can also stay parallel with

The tag alias knees_together_feet_together -> legs_together has been approved.