[fedora-d&i] [fedora-diversity] PR #83: Add docs contributing guide, point to them in README

pbokoc commented on the pull-request: `Add docs contributing guide, point to them in README` that you are following: `` Looks good, although I'm wondering why the "Advanced topics for AsciiDoc" part appears to be commented out. Is that on purpose or did you forget to uncomment that? `` To reply, visit the link below or just reply to this email https://pagure.io/fedora-diversity/pull-request/83