Fix Attach Flag module not supporting all flag pole types (#786)

Author: Apricot-ale

addons/modules/functions/fnc_moduleAttachFlag.sqf

@@ -28,7 +28,7 @@ if !(alive _object) exitWith {
     [LSTRING(OnlyAlive)] call EFUNC(common,showMessage);
 };
 
-if !(_object isKindOf "AllVehicles" || {_object isKindOf "FlagCarrier"}) exitWith {
+if !(_object isKindOf "AllVehicles" || {_object isKindOf "FlagCarrierCore"}) exitWith {
     [LSTRING(OnlyVehiclesOrFlags)] call EFUNC(common,showMessage);
 };