documentation

Pull request #1177: feature/DEV-2553-7.0-D-API: Updated `delay` prop description in multiple APIs.

Merge in WEB/documentation from feature/DEV-2553-7.0-D-API to release/7.0

* commit 'e756d5c29e77de505e74973087237f80e000c595':
  [DEV-2553] Reverted adding info for using a user macro as the value for `delay`
  [DEV-2553] Removed italics for consistency
  [DEV-2553] Added line breaks; added info for using a user macro as the value for `delay`
  [DEV-2553] Updated `delay` description in multiple APIs
  [DEV-2553] Updated `delay` description in Item API