problem with string encoding

In the airlines dabatase in spider lite we have such examples in the generated schema: 
```
  - airport_code: KHV
    airport_name: "{\"en\": \"Khabarovsk-Novy Airport\", \"ru\": \"\u0425\u0430\u0431\
      \u0430\u0440\u043E\u0432\u0441\u043A-\u041D\u043E\u0432\u044B\u0439\"}"
```