fix: invalid JSON formatting

[raxhvl]

The JSON.parse() function converts the string to JavaScript object:

[
  {
    line: 10,
    column: 9,
    severity: 'Warning',
    message: 'Variable "x" is unused',
    ruleId: 'no-unused-vars',
    fix: null,
    filePath: 'src/Boolean.sol'
  },
  { conclusion: '1 problem/s (1 warning/s)' }
] 

instead of standard JSON:

[
    {
        "line": 10,
        "column": 9,
        "severity": "Warning",
        "message": 'Variable "x" is unused',
        "ruleId": "no-unused-vars",
        "fix": None,
        "filePath": "src/types/Boolean.sol"
    },
    { "conclusion": "1 problem/s (1 warning/s)" }
]

This prevents JSON parsing of the generated output.

[dbale-altoros]

@ravindranrahul this is GREAT!
I totally missed that
I will be merging this today and put it in next version tomorrow

THANKS A LOT!!!!