修复xml返回的bug

library/org/transform.php

@@ -26,7 +26,7 @@ class Transform
     private static function init($type)
     {
         if (!isset(self::$handler[$type])) {
-            $class                = '\\think\\transform\\driver\\' . strtolower($type);
+            $class                = '\\org\\transform\\driver\\' . strtolower($type);
             self::$handler[$type] = new $class();
         }
     }

library/org/transform/driver/xml.php

@@ -72,7 +72,7 @@ class Xml
      * @param  string $id   数字索引key转换为的属性名
      * @return string
      */
-    public static function data2xml(SimpleXMLElement $xml, $data, $item = 'item', $id = 'id')
+    public static function data2xml(\SimpleXMLElement $xml, $data, $item = 'item', $id = 'id')
     {
         foreach ($data as $key => $value) {
             //指定默认的数字key