RFR: 8339094: Shenandoah: Fix up test output from ShenandoahNumberSeqTest

[Y. Srinivas Ramakrishna]

8339094: Shenandoah: Fix up test output from ShenandoahNumberSeqTest

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Commit messages:
 - JDK-8339094 : Shenandoah: Fix up test output from ShenandoahNumberSeqTest

Changes: https://git.openjdk.org/shenandoah/pull/487/files
  Webrev: https://webrevs.openjdk.org/?repo=shenandoah&pr=487&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8339094
  Stats: 2 lines in 1 file changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/shenandoah/pull/487.diff
  Fetch: git fetch https://git.openjdk.org/shenandoah.git pull/487/head:pull/487

PR: https://git.openjdk.org/shenandoah/pull/487