Use proper indentation for JSON bodies in Javascript and Nodejs codegens

[webholik]

Before:

var data = '{\n    "Hello": "world",\n    "boolean": true,\n    "array": [1,2,3]\n}';

After:

var data = JSON.stringify({
    "Hello": "world",
    "boolean": true,
    "array": [
        1,
        2,
        3
    ]
});

[NathBabs]

If this has been merged, why am I still seeing it today ?

[Avdhesh-Varshney]

I'm also facing the same issue while writing my API documentation