[v9.x backport] doc: add new documentation lint rule
Backport of https://github.com/nodejs/node/pull/18726
Add 80 characters limit to docs. Change docs to fit 80 characters per row.
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
Backport of https://github.com/nodejs/node/pull/18726
Add 80 characters limit to docs. Change docs to fit 80 characters per row.