RFR: 8299502: Usage of constructors of primitive wrapper classes should be avoided in javax.xml API docs

[Justin Lu]

Removed constructors of primitive wrapper classes (deprecated for removal) in _javax.xml.stream.XMLOutputFactory_ 

Replaced with Boolean static fields: Boolean.TRUE and Boolean.FALSE

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Commit messages:
 - Copyright year
 - Replace constructor with static field

Changes: https://git.openjdk.org/jdk/pull/11872/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=11872&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8299502
  Stats: 2 lines in 1 file changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/11872.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/11872/head:pull/11872

PR: https://git.openjdk.org/jdk/pull/11872