Document https://fedoraproject.org/wiki/Changes/SPDX_Licenses_Phase_2
Fixes: https://pagure.io/fedora-docs/release-notes/issue/974
rebased onto cf32519e49598b9117216aa3e793c2aef512f0d8
Thanks!
Pull-Request has been merged by pbokoc
Document https://fedoraproject.org/wiki/Changes/SPDX_Licenses_Phase_2