newsupernova/vendor/magento/magento2-base/dev/tools/grunt/configs/styledocco.json

{
    "documentation": {
        "options": {
            "name": "Magento UI Library",
            "verbose": true,
            "include": [
                "<%= path.doc %>/docs.css"
            ]
        },
        "files": {
            "<%= path.doc %>": "<%= path.doc %>/source"
        }
    }
}