documentation

Pull request #3160: ZBXNEXT-9834 updated SAML-related documentation, formatting.

Merge in WEB/documentation from feature/ZBXNEXT-9834-7.5-D to release/8.0

* commit '8f416524be9b9eae4774d489e42cb58dc235ffff':
  ZBXNEXT-9834 changed properties order for consistency, removed redundant comma.
  ZBXNEXT-9834 moved table entries for consistency.
  ZBXNEXT-9834 fixed repeating words.
  ZBXNEXT-9834 fixed copy-paste error, formatting.
  ZBXNEXT-9834 clarifications, improvements, formatting.
  ZBXNEXT-9834 added missing space, fixed section name, removed redundant sentences, formatting.
  ZBXNEXT-9834 fixed a comment block.
  ZBXNEXT-9834 fixed a comment block.
  ZBXNEXT-9834 updated SAML-related documentation, formatting.