Convert links to full-reference links
Convert links to full-reference links

Converted the links to full-reference links following
https://spec.commonmark.org/0.28/#full-reference-link to solve
the issue: archivematica/Issues#1370.
Skipped the Links in Table of Contents for now since it says don't edit.

artefactual/archivematica,artefactual/archivematica,artefactual/archivematica,artefactual/archivematica