documentation

Pull request #2513: Feature/ZBX-23449 7.3 D

Merge in WEB/documentation from feature/ZBX-23449-7.3-D to release/7.4

* commit 'e52268ebb787721e515124c097aba8279fb35f48':
  ZBX-23449 deleted unnecessary passage.
  ZBX-23449-7.0 links fixed
  ZBX-23449-7.0 link and formatting fixes
  ZBX-23449-7.0 formatted and edited.