RFR: 317: git-webrev uses wrong JBS links for commit messages

[Erik Helin]

Hi all,

please review this small patch that ensures that `git-webrev` use the correct
JBS project issue id:s in commit messages.

Testing:
- Manual testing of `git-webrev` on Linux x64

Thanks,
Erik

-------------

Commit messages:
 - skara-317

Changes: https://git.openjdk.java.net/skara/pull/514/files
 Webrev: https://webrevs.openjdk.java.net/skara/514/webrev.00
  Issue: https://bugs.openjdk.java.net/browse/SKARA-317
  Stats: 7 lines in 1 file changed: 5 ins; 0 del; 2 mod
  Patch: https://git.openjdk.java.net/skara/pull/514.diff
  Fetch: git fetch https://git.openjdk.java.net/skara pull/514/head:pull/514

PR: https://git.openjdk.java.net/skara/pull/514