Review and Commit links for backport branches

[Volker Simonis]

Hi,

After the JDK stabilization process has moved from using dedicated
repositories to using branches in the https://git.openjdk.org/jdk
repository, I noticed that Commit, Review and PullRequest links for
the master repository are now indistinguishable from the corresponding
downport links. E.g. from https://bugs.openjdk.org/browse/JDK-8333722:

Commit openjdk/jdk/5f9d3e3a
Commit openjdk/jdk/fdbc2b24

Review openjdk/jdk/19578
Review openjdk/jdk/19622

Previously, such links were easily distinguishable because they were
for different repositories.

I wonder if it would be possible to somehow add the branch name to the
link description, if it is not master, in order to make it more clear
what they refer to. E.g.

Commit openjdk/jdk/5f9d3e3a
Commit openjdk/jdk:23/fdbc2b24

Review openjdk/jdk/19578
Review openjdk/jdk:23/19622

Thank you and best regards,
Volker