onboarding docs: updated content on Reference and DSOP_Duplication guides
onboarding docs: added reference to documentation/personas.md, as well as references for using your own DISA/CVE scanning profiles
@sroth, do you mind checking the changes here and making sure they look good? It should be pretty quick. If you think it's good to go, you could just merge it.
Edited by Humberto Ojeda