update data-structure.md

@@ -1179,16 +1179,11 @@
 
                   'detail' : {
                      'list' : [
-                         array{
+                         {
                              'fieldName' : '头像',
                              'firstModel' : 'http://static.dev.yohobuy.com/img/product/avatar1.png',
                              'secondModel' =>'http://static.dev.yohobuy.com/img/product/avatar2.png'
                          },
-                         {
-                             'fieldName' : '模特',
-                             'firstModel' : 'Oliver',
-                             'secondModel' : 'Jvly'
-                          },
                          ...
                       ]
                   }