It's common practise to use [[wikilink]] syntax to mention page names
in comments of JS/CSS/Scribunto code where the links ordinarily don't
work. Using JavaScript to actually make the syntax clickable makes
navigation easier.
{{Templates links}} and external links are also supported.
Bug: T368166
Change-Id: I999937c1f6303ecc64adb6285e73a9ce10f67bd8
