documentation

[ZBXNEXT-7049] added third parameter to the Prometheus pattern preprocessing step

* commit '8710798a7b6551249d563c9aa09315e343743970':
  changes_5.4_-_6.0.md minor grammar fixes
  object.md minor grammar fixes
  object.md minor grammar fixes
  .D........ [ZBXNEXT-7049] fixed item and itemprototype API documentation to better represent the changes
  .D........ [ZBXNEXT-7049] added records for API changes page
  .D........ [ZBXNEXT-7049] fixed item prototype object API documentation
  .D........ [ZBXNEXT-7049] fixed item object API documentation
  .......... [ZBXNEXT-7049] updated item object documentation