RFR: 8297258: Typo in `java -help` referencing -disable- at files instead of --disable- at files

[Adam Sotona]

There is a typo in `java -help` referencing -disable- at files instead of --disable- at files option.

Please review.

Thanks,
Adam

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

Commit messages:
 - 8297258: Typo in `java -help` referencing -disable- at files instead of --disable- at files

Changes: https://git.openjdk.org/jdk/pull/11236/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=11236&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8297258
  Stats: 11 lines in 11 files changed: 0 ins; 0 del; 11 mod
  Patch: https://git.openjdk.org/jdk/pull/11236.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/11236/head:pull/11236

PR: https://git.openjdk.org/jdk/pull/11236