RFR: 8258058: improve description of OutOfMemoryError relevant flags

[Xin Liu]

8258058: improve description of OutOfMemoryError relevant flags

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Commit messages:
 - 8258058: improve description of OutOfMemoryError relevant flags

Changes: https://git.openjdk.java.net/jdk/pull/1792/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=1792&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8258058
  Stats: 7 lines in 1 file changed: 3 ins; 0 del; 4 mod
  Patch: https://git.openjdk.java.net/jdk/pull/1792.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/1792/head:pull/1792

PR: https://git.openjdk.java.net/jdk/pull/1792