doc: update formatting to fit our 80 chars rule

This will also use a proper indentation as a couple of entries
had a extra indentation of two spaces.

PR-URL: https://github.com/nodejs/node/pull/17722


Reviewed-By: Jon Moss <me@jonathanmoss.me>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Daniel Bevenius <daniel.bevenius@gmail.com>