doc: support multidimensional arrays in type link

Currently, we have at least one multidimensional array
in type signature: see `records` parameter in
https://nodejs.org/api/dns.html#dns_dns_resolvetxt_hostname_callback

Our type parser does not linkify these signatures properly.
This PR tries to fix this.

PR-URL: https://github.com/nodejs/node/pull/16207


Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Yuta Hiroto <hello@about-hiroppy.com>