RFR: Added contact info for maillist problems.

[Jesper Wilhelmsson]

Added contact info for maillist problems.

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Commit messages:
 - Added contact info for maillist problems.

Changes: https://git.openjdk.java.net/guide/pull/33/files
 Webrev: https://webrevs.openjdk.java.net/?repo=guide&pr=33&range=00
  Stats: 4 lines in 1 file changed: 4 ins; 0 del; 0 mod
  Patch: https://git.openjdk.java.net/guide/pull/33.diff
  Fetch: git fetch https://git.openjdk.java.net/guide pull/33/head:pull/33

PR: https://git.openjdk.java.net/guide/pull/33