RFR: 8309955: Matcher uses @since {@inheritDoc}

[Raffaello Giulietti]

Trivial fix to working but unsupported use of {@inheritDoc}

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Commit messages:
 - 8309955: Matcher uses @since {@inheritDoc}

Changes: https://git.openjdk.org/jdk/pull/14452/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=14452&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8309955
  Stats: 2 lines in 1 file changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/14452.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/14452/head:pull/14452

PR: https://git.openjdk.org/jdk/pull/14452