documentation

Pull request #2034: ZBXNEXT-6726-7.0 - HashiCorp tokens

Merge in WEB/documentation from feature/ZBXNEXT-6726-7.0-D to release/7.0

* commit '4d2101c12e795e3655b149fa3563e1c7068526f6':
  improved description of HashiCorp token renewals (ZBXNEXT-6726)
  fixed formatting
  updated HashiCorp parameter values (ZBXNEXT-6726)
  fixed inconsistencies related to HashiCorp token auto-renewals (ZBXNEXT-6726)
  added that HashiCorp supports token autorenewal; fixed parameter examples (ZBXNEXT-6726)