RFR: 8374825: vmTestbase comment typo: lunch

[Kevin Walls]

Trivial but confusing test comment/documentation cleanup.

Remove confusing typo and reference to preallocated exceptions in the eatMemory routines.

-------------

Commit messages:
 - 8374825: vmTestbase comment typo: unrelated to lunch

Changes: https://git.openjdk.org/jdk/pull/29126/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=29126&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8374825
  Stats: 18 lines in 2 files changed: 0 ins; 12 del; 6 mod
  Patch: https://git.openjdk.org/jdk/pull/29126.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/29126/head:pull/29126

PR: https://git.openjdk.org/jdk/pull/29126