Kokkimusume to Kokkimusume_(ppfjvdjudk54073)

BUR #61826 is pending approval.

rename kokkimusume -> kokkimusume_(ppfjvdjudk54073)

I made a copyright tag for a twitter trend, but was told that doing so wasn't appropriate. Instead, it was suggested this would be better suited as a qualifier.

Specifically, I was the one who raised the issue. Kokkimusume (国旗娘) is, from what I can tell, ambiguous with past art of flag girls, so if we're going to give Ra (ppfjvdjudk54073)'s flag girls their own copyright tag, it should be clear it's for them.

Not sure if it should continue to be a copyright. It's not an original concept and some people are already drawing their own personification under the same hashtag.