Integrated: 8323745: Missing comma in copyright header in TestScope

[Per Minborg]

This PR proposed to fix a missing comma in the header of TestScope

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Commit messages:
 - Add missing comma in copyright header

Changes: https://git.openjdk.org/jdk/pull/17431/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=17431&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8323745
  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/17431.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/17431/head:pull/17431

PR: https://git.openjdk.org/jdk/pull/17431