RFR: 8298692: Fix typos in test/jdk/com/sun/jdi files

[Chris Plummer]

These are the typos from #10029 that relate to test/jdk/com/sun/jdi.

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Commit messages:
 - Fix some jdi test typos in comments

Changes: https://git.openjdk.org/jdk/pull/11656/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=11656&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8298692
  Stats: 3 lines in 3 files changed: 0 ins; 0 del; 3 mod
  Patch: https://git.openjdk.org/jdk/pull/11656.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/11656/head:pull/11656

PR: https://git.openjdk.org/jdk/pull/11656