[1.6] Vital Shot action type

[Ocd595]

Possibly not a bug, but seems odd when compared to other weapon prodigies-- vital shot's use type is standard rather than archery, so its comparative utility actually decreases as the user improves attack speed. Could be intentional for balance, but it stuck out next to windblade/YSbmW/Massive Blow, so I thought it was worth mentioning.