RFR: 8352277: java.security documentation: incorrect regex syntax describing "usage" algorithm constraint

[Artur Barashev]

We have an incorrect regex syntax when describing a "usage" algorithm constraint. Current syntax indicates that usage types are optional while they are not: at least one usage type should be specified.

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

Commit messages:
 - 8352277: java.security documentation: incorrect regex syntax describing "usage" algorithm constraint

Changes: https://git.openjdk.org/jdk/pull/24231/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=24231&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8352277
  Stats: 6 lines in 1 file changed: 3 ins; 0 del; 3 mod
  Patch: https://git.openjdk.org/jdk/pull/24231.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/24231/head:pull/24231

PR: https://git.openjdk.org/jdk/pull/24231