doc: prepare miscellaneous docs for new markdown lint rules

Prepare the final few documents that haven't been updated to always use
`[]` with reference links and to escape `[` and `]` for things that
aren't links in markdown files.

PR-URL: https://github.com/nodejs/node/pull/29963


Reviewed-By: Masashi Hirano <shisama07@gmail.com>
Reviewed-By: David Carlier <devnexen@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Richard Lau <riclau@uk.ibm.com>