[Bug 1655461] w3c-markup-validator-20.2.28 is available

https://bugzilla.redhat.com/show_bug.cgi?id=1655461

--- Comment #11 from Upstream Release Monitoring  ---
The following Sources of the specfile are not valid URLs so we cannot
automatically build the new version for you.  Please use URLs in your Source
declarations if possible.

- w3c-markup-validator-20.2.28.tar.xz
- w3c-markup-validator-prepare-tarball.sh