documentation

Pull request #1634: feature/ZBXNEXT-8983-6.0-D. Updated maximum supported MariaDB version to 11.2.

Merge in WEB/documentation from feature/ZBXNEXT-8983-6.0-D to release/6.0

* commit '2336925c8363e7c674e978fd6b8d095334a1ee47':
  [ZBXNEXT-8983] Updated maximum supported MariaDB version to 11.2