Standardize the Buckets return value in ListBuckets (#325)

* Standardize the `Buckets` return value in `ListBuckets`

Author: sy-records

src/Client.php

@@ -51,7 +51,7 @@
  * @method object PutObject(array $args) 上传对象
  * @method object AppendObject(array $args) 追加对象
  * @method object PutObjectAcl(array $args) 设置 COS 对象的访问权限信息（Access Control List, ACL）
- * @method object PutBucketAcl(array $args) 设置存储桶（Bucket）的访问权限（Access Control List, ACL)
+ * @method object PutBucketAcl(array $args) 设置存储桶（Bucket）的访问权限 (Access Control List, ACL)
  * @method object PutBucketCors(array $args) 设置存储桶（Bucket）的跨域配置信息
  * @method object PutBucketDomain(array $args) 设置存储桶（Bucket）的Domain信息
  * @method object PutBucketLifecycle(array $args) 设置存储桶（Bucket）生命周期配置
@@ -239,7 +239,7 @@ class Client extends GuzzleClient {
     const VERSION = '2.6.6';
 
     public $httpClient;
-    
+
     private $api;
     private $desc;
     private $action;

src/Service.php

@@ -1562,7 +1562,7 @@ public static function getService() {
                         ),
                     )
                 ),
-                // 设置存储桶（Bucket）的访问权限（Access Control List, ACL)
+                // 设置存储桶（Bucket）的访问权限 (Access Control List, ACL)
                 'PutBucketAcl' => array(
                     'httpMethod' => 'PUT',
                     'uri' => '/{Bucket}?acl',
@@ -5621,11 +5621,21 @@ public static function getService() {
                             'items' => array(
                                 'type' => 'object',
                                 'properties' => array(
-                                    'Name' => array(
-                                        'type' => 'string',
-                                    ),
-                                    'CreationDate' => array(
-                                        'type' => 'string',
+                                    'Bucket' => array(
+                                        'type' => 'array',
+                                        'items' => array(
+                                            'type' => 'object',
+                                            'items' => array(
+                                                'properties' => array(
+                                                    'Name' => array(
+                                                        'type' => 'string',
+                                                    ),
+                                                    'CreationDate' => array(
+                                                        'type' => 'string',
+                                                    ),
+                                                ),
+                                            ),
+                                        )
                                     ),
                                 ),
                             ),