RFR: 8330066: HeapDumpPath and HeapDumpGzipLevel VM options do not mention HeapDumpBeforeFullGC and HeapDumpAfterFullGC

[Alex Menkov]

The fix updates descriptions of `HeapDumpPath`/`HeapDumpGzipLevel` and `HeapDumpBeforeFullGC`/`HeapDumpAfterFullGC`/`HeapDumpOnOutOfMemoryError` VM options

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Commit messages:
 - updated HeapDumpOnOutOfMemoryError
 - updated HeapDumpOnOutOfMemoryError
 - fix

Changes: https://git.openjdk.org/jdk/pull/19224/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=19224&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8330066
  Stats: 8 lines in 1 file changed: 3 ins; 0 del; 5 mod
  Patch: https://git.openjdk.org/jdk/pull/19224.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/19224/head:pull/19224

PR: https://git.openjdk.org/jdk/pull/19224