RFR: 8254261: fix javadocs in jdk.test.lib.Utils

[Igor Ignatyev]

Hi all,

could you please review this trivial fix of javadocs in `jdk.test.lib.Utils`?

-- Igor

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Commit messages:
 - 8254261: fix javadocs in jdk.test.lib.Utils

Changes: https://git.openjdk.java.net/jdk/pull/566/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=566&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8254261
  Stats: 27 lines in 1 file changed: 4 ins; 2 del; 21 mod
  Patch: https://git.openjdk.java.net/jdk/pull/566.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/566/head:pull/566

PR: https://git.openjdk.java.net/jdk/pull/566