nested order have bug

[stoneLee81]

when ordering nested field, it can't be. miss nested_path part in sort field

[shi-yuan]

SELECT * FROM elasticsearch-sql_test_index_nested_type ORDER BY NESTED('message.info','message')

{
  "from": 0,
  "size": 200,
  "sort": [
    {
      "message.info": {
        "order": "asc",
        "nested": {
          "path": "message"
        }
      }
    }
  ]
}