doc/tools: fix more type inconsistencies

- fix a number of uppercase types
- lowercase 'integer'
- consistent formatting in crypto

PR-URL: https://github.com/nodejs/node/pull/11697


Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Timothy Gu <timothygu99@gmail.com>