documentation

Pull request #2086: feature/ZBXNEXT-9404-7.0-D-API. permitted mediatype.get for User type users.

Merge in WEB/documentation from feature/ZBXNEXT-9404-7.0-D-API to release/7.0

* commit '5a2b260432dd31509084903f0d9d8d842eef73c1':
  [ZBXNEXT-9404, ZBX-25385] permitted mediatype.get for User type users; restricted mediatype.get for Admin type users
  [ZBXNEXT-9404] permitted mediatype.get for User type users
  [ZBXNEXT-9404] permitted mediatype.get for User type users