Site Config
the config file should look like:
{"basePath": "docs","docs": [{"id": "welcome"},{"id": "getting-started"}],"config": {"name": "📖 gatsby-theme-doc","nav": {"links": [{ "label": "Docs", "url": "/docs" },{"label": "Github","url": "https://github.com/yjose/gatsby-theme-doc"}]}}}