documentation

Pull request #1598: feature/ZBX-23541-6.0-D: Added info and URLs.

Merge in WEB/documentation from feature/ZBX-23541-6.0-D to release/6.0

* commit '2acb766f0af70c24b27416aeda3d5c27b1ca3b1e':
  [ZBX-23541] Clarified wording
  [ZBX-23541] Fixed spelling
  [ZBX-23541] Added subheading and updated URLs
  [ZBX-23541] Added info and URLs