docs: update outdated technical specs, Node version, and repository URLs#4075

Muawiya-contact wants to merge 4 commits into

linuxfoundation:mainlinuxfoundation/crowd.dev:mainfrom

Muawiya-contact:docs/update-technical-discrepanciesMuawiya-contact/crowd.dev:docs/update-technical-discrepanciesCopy head branch name to clipboard