add json CN

resource/locales/zh_CN/translation.json

@@ -298,7 +298,8 @@
 		"label": {
 			"Duplicate page": "Duplicate page",
 			"New page name": "New page name",
-			"Current page name": "Current page name"
+			"Current page name": "Current page name",
+			"Duplicate with child": "Duplicate with child"
 		}
 	},
 	"modal_putback": {
@@ -721,4 +722,4 @@
 		"complete_to_install2": "完成安装GROWI！请先检查此页上的每个设置。",
 		"failed_to_create_admin_user": "无法创建管理用户。{{errMessage}"
 	}
-}
+}