From DoomWiki.org

This template is used to replace links to deleted pages in order to clear up any confusion. It takes three arguments:

{{deleted|link|display text|hover text}}
  1. link: name of the deleted page (mandatory)
  2. display text: text to show (optional)
  3. hover text: text displayed on mouseover (optional, defaults to "Deleted page: <link>")

Adapted from UESP.