fix(configs): fix broken json configs structures

### Bug story
This error is occured when I tried to run the generated application. Below are the respective error logs:
```
npm start

> test@0.0.1 start /app/test
> node index.js


module.js:485
    throw err;
          ^
SyntaxError: /app/test/config/app.json: Unexpected string
    at Object.parse (native)
    at Object.Module._extensions..json (module.js:482:27)
    at Module.load (module.js:356:32)
    at Function.Module._load (module.js:312:12)
    at Module.require (module.js:364:17)
    at require (module.js:380:17)
    at Object.<anonymous> (/app/test/index.js:7:15)
    at Module._compile (module.js:456:26)
    at Object.Module._extensions..js (module.js:474:10)
    at Module.load (module.js:356:32)
npm ERR! weird error 8
npm ERR! not ok code 0
```

and: 
```
npm start

> my-kabam-project@0.0.1 start /app/test
> node index.js


module.js:485
    throw err;
          ^
SyntaxError: /app/test/config/service.json: Unexpected string
    at Object.parse (native)
    at Object.Module._extensions..json (module.js:482:27)
    at Module.load (module.js:356:32)
    at Function.Module._load (module.js:312:12)
    at Module.require (module.js:364:17)
    at require (module.js:380:17)
    at Object.<anonymous> (/app/test/index.js:6:19)
    at Module._compile (module.js:456:26)
    at Object.Module._extensions..js (module.js:474:10)
    at Module.load (module.js:356:32)
npm ERR! weird error 8
npm ERR! not ok code 0
```