Integrated: 8346007: Incorrect copyright header in UModLNodeIdealizationTests.java

[theoweidmannoracle]

Fixes a missing comma in the copyright notice.

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Commit messages:
 - Add missing comma

Changes: https://git.openjdk.org/jdk/pull/22683/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=22683&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8346007
  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/22683.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/22683/head:pull/22683

PR: https://git.openjdk.org/jdk/pull/22683