RFR: 8374044: Docs build fails: Cannot determine current path

[Dan Smith]

Adding the needed -XDaccessInternalAPI to the alternate "reference" list of javadoc args.

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

Commit messages:
 - 8374044: Docs build fails: Cannot determine current path

Changes: https://git.openjdk.org/jdk/pull/28909/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=28909&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8374044
  Stats: 2 lines in 1 file changed: 1 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/28909.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/28909/head:pull/28909

PR: https://git.openjdk.org/jdk/pull/28909