documentation

Pull request #2233: Feature/ZBX-23960 7.3 D c4

Merge in WEB/documentation from feature/ZBX-23960-7.3-D-c4 to release/7.4

* commit '48c51ec8691b644f85b9b9b2f680269b922eec72':
  ZBX-23960 renamed "bar" to "section name".
  ZBX-23960 fixed the filter button position.
  ZBX-23960 fixed button name, clarified filter position, renamed "bar" to "section name".