Small .hack// tag cleanup

Posted under Tags

BUR #55129 has been approved by @nonamethanks.

rename grunty -> grunty_(.hack//)
create alias puchiguso -> grunty_(.hack//)

Two tags for the same creature. They were originally called puchiguso in Japanese and grunty in English, but apparently they were called grunty even in Japanese in the later game so it makes most sense to go with that. Adding a qualifier as it's a simple name.

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