RFR: 8339927: Man page update for deprecating jhsdb debugd for removal

[Kevin Walls]

Man page update to warn of deprecation of the jshdb debug subcommand and --connect option.

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Commit messages:
 - 8339927: Man page update for deprecating jhsdb debugd for removal

Changes: https://git.openjdk.org/jdk/pull/20946/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=20946&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8339927
  Stats: 5 lines in 1 file changed: 4 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/20946.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/20946/head:pull/20946

PR: https://git.openjdk.org/jdk/pull/20946