documentation

Pull request #3365: Feature/ZBX-23027 7.5 D

Merge in WEB/documentation from feature/ZBX-23027-7.5-D to release/8.0

* commit 'c5c8beb7b551f25b1ab2f9931d3790d698d9d28a':
  ZBX-23027 added sentences, corrected the note.
  ZBX-23027 clarified ways to bind in LDAP.
  ZBX-23027 formatting.