Changelog: (re)Add links to markdown output
Changelog: (re)Add links to markdown output

The links on authors and pull requests are now an optional feature in the
release notes generator. This commit reenables the links in the changelog
to return them to the Kubernetes release notes.

Signed-off-by: Adolfo García Veytia (Puerco) <9de42c8261a7cacaae239656a4dd6991d9b9250f@uservers.net>

kubernetes/release,kubernetes/release