RFR: 239: Add link to pull requests to automatically generated webrevs

[Erik Helin]

Hi all,

please review this small patch that adds a link to the PR in webrevs.

Thanks,
Erik

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Commits:
 - ab383900: Add link to PR in webrevs

Changes: https://git.openjdk.java.net/skara/pull/374/files
 Webrev: https://webrevs.openjdk.java.net/skara/374/webrev.00
  Issue: https://bugs.openjdk.java.net/browse/SKARA-239
  Stats: 1 line in 1 file changed: 1 ins; 0 del; 0 mod
  Patch: https://git.openjdk.java.net/skara/pull/374.diff
  Fetch: git fetch https://git.openjdk.java.net/skara pull/374/head:pull/374

PR: https://git.openjdk.java.net/skara/pull/374