The URL to your config seems to not be a link – URL still is valid, just have to copy-paste it. Just so you know, thanks for sharing!
Thank you for pointing it out! 🙏
My mistake - I used a MD file instead of an Org file for the post. In Org, URLs will automatically be exported as a link, in MD (at least with pandoc) I have to make an explicit link from it. I didn’t remember that.