Follow-up from "Merge COPYING.* into LICENSE.md"

!1 (merged) has already been merge and the update Gedare suggested needs to be applied.

The following discussion from !2 (merged) should be addressed:

• @gedare started a discussion: (+1 comment)

  Please update the README file accordingly at "The sources presented here originate in one of several locations described by the ORIGIN.* files and whose license is described by the COPYING.* files."