Remove `copy` word from alias of duplicated product

modules/module_shop_act_duplicate.go

@@ -53,7 +53,7 @@ func (this *Modules) RegisterAction_ShopDuplicate() *Action {
 					currency,
 					price,
 					CONCAT(name, ' (Copy)'),
-					CONCAT(alias, '-', 'copy-`+utils.Int64ToStr(time.Now().Unix())+`'),
+					CONCAT(alias, '-', '`+utils.Int64ToStr(time.Now().Unix())+`'),
 					vendor,
 					quantity,
 					category,