message: Add documentation for GetBaseArmorClass() for completeness
diff: @@ -21,6 +21,7 @@ NWNX_Item_SetBaseItemType | Change the item's base item type (e.g. change an arm
  NWNX_Item_SetItemAppearance | Change item's appearance. A more general function with syntax similar to the NWScript function CopyItemAndModify. Changes will not be visible until the item is refreshed (e.g. drop and take the item, or logging out and back in).
  NWNX_Item_GetEntireItemAppearance | Gets the full item appearance as a string.
  NWNX_Item_RestoreItemAppearance | Restores an item's appearance with the supplied appearance string.
  +NWNX_Item_GetBaseArmorClass | Get the item's base armor class.
  NWNX_Item_GetMinEquipLevel | Gets the minimum level required to equip the item.
  