[0669] Fixed equipment of creature 8890 in Blackrock Depths

* Fixed equipment item for creature 8890 (Anvilrage Warden) in
Blackrock Depths
Thanks Stan84 for pointing. This closes #523
[0670] Fixed equipment of creature 10996

* Fixed equipment item for creature 10996 (Fallen Hero) in
Western/Eastern Plaguelands
Thanks Zingzah  for pointing. This closes #507