Relative page links in markdown files within gatsby

Let say within your markdown file in your gatsby project, you want to link to another page. Eg. you want to link to /about using [About](/about)

Thanks for this stackoverflow article, the answer is pretty simple.

1. npm install gatsby-plugin-catch-links
2. add gatsby-plugin-catch-links to gatsby-config.js
3. write your link exactly as per example above (see the raw version of this page in the using-remark repo)