documentation

Pull request #2974: feature/ZBX-25313-7.0-D. added "Boot time" item to VMware Guest template.

Merge in WEB/documentation from feature/ZBX-25313-7.0-D to release/7.0

* commit 'd486c329c33428f203d8deb36bb7a2a5cc090545':
  [ZBX-25313] removed mention of already existing feature
  [ZBX-25313] minor wording clarification
  [ZBX-25313] added "Boot time" item to VMware Guest template