doc: cross-link util.TextDecoder and intl.md
Checklist
-
documentation is changed or added -
commit message follows commit guidelines
Affected core subsystem(s)
doc, intl, util
Also: note about builds without ICU and ASCII-sort some bottom references.
I am not sure what to write in two table cells, so I've left (see https://github.com/nodejs/node/pull/14486#discussion_r129460390)REPLACEME
there. Please, let me know how to correct them.
cc @jasnell