Follow-up from "Resolve "Undefined method `terms_of_service_url'""

The following discussion from !18263 (merged) should be addressed:

  • @ashmckenzie started a discussion:

    I feel we should add (PDF) to the end of the link text in the UI so as to make it clear to those who click the link that a page won't render but rather a PDF will be downloaded:

    Preferences___Admin_Area___GitLab_2019-10-10_12-21-37