a warning for outdated wiki pages (Finnish documentation)

The English Moodle wiki has this warning on top of the page, if the version of the page does not refer to the latest Moodle version:

Note: You are currently viewing documentation for Moodle 3.2. Up-to-date documentation for the latest stable version of Moodle is probably available here: About Moodle.

If possible, we'd like to have a similar warning for the Finnish docs. (In practice, for the https://docs.moodle.org/2x/fi/ namespace, since we only have 2x and 3x pages at the moment.)

I took a quick look, and it looks like it's not done with the editable wiki templates. Is there a way to enable it for the Finnish wiki, or should we just create a template for that?

The text could be something like this (but ideally, editable later):

Huom. Tämän sivun ohjeet neuvovat vanhan Moodle-version käytössä. Uusin versio tästä ohjesivusta löytyy todennäköisesti täältä: LINK HERE.