RFR: Fix markdown mistake in reviewer link

[Robin Westberg]

Hi all,

Please review this trivial fix that creates proper markdown for the reviewer links.

Best regards,
Robin

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Commit messages:
 - Fix markdown mistake

Changes: https://git.openjdk.java.net/skara/pull/765/files
 Webrev: https://webrevs.openjdk.java.net/?repo=skara&pr=765&range=00
  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.java.net/skara/pull/765.diff
  Fetch: git fetch https://git.openjdk.java.net/skara pull/765/head:pull/765

PR: https://git.openjdk.java.net/skara/pull/765