RFR: Proper markdown formatting of issue link

[Robin Westberg]

Hi all,

Please review this trivial fix that properly formats the issue link in pull request summaries.

Best regards,
Robin

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Commits:
 - 40deed16: Proper markdown formatting of issue link

Changes: https://git.openjdk.java.net/skara/pull/184/files
 Webrev: https://webrevs.openjdk.java.net/skara/184/webrev.00
  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.java.net/skara/pull/184.diff
  Fetch: git fetch https://git.openjdk.java.net/skara pull/184/head:pull/184

PR: https://git.openjdk.java.net/skara/pull/184