### Summary When displaying contribution guidelines for a project, if both text and markdown versions are available, the markdown version should be preferred. (This is how it works when both README and README.md are present, for example.) ### Steps to reproduce In a project that already has CONTRIBUTING.md: * `pandoc -s -t html CONTRIBUTING.md | w3m -dump -cols 75 -O ascii -T text/html > CONTRIBUTING` * `git add CONTRIBUTING` * commit and push * review "contribution guidelines" for the project * observe that it displays CONTRIBUTING as plain text, not CONTRIBUTING.md as formatted text, even though both files exist This can currently be observed in situ at https://gitlab.isc.org/isc-projects/bind9/issues/new ### What is the current *bug* behavior? The "contribution guidelines" link points to blob/master/CONTRIBUTING. ### What is the expected *correct* behavior? The "contribution guidelines" link points to blob/master/CONTRIBUTING.md (if it exists, which on my project it does).