Add 80 characters limit to docs. Change docs to fit 80 characters per row. PR-URL: https://github.com/nodejs/node/pull/18726 Fixes: https://github.com/nodejs/node/issues/18703 Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de> Reviewed-By: Matteo Collina <matteo.collina@gmail.com> Reviewed-By: Gibson Fahnestock <gibfahn@gmail.com> Reviewed-By: Anatoli Papirovski <apapirovski@mac.com>
