While researching for T396142 on Finnish Wikipedia, we noted that the Learn more button under the "Publishing only allowed to experienced users" message (see this photo for context) links to a project page on English Wikipedia (https://en.wikipedia.org/wiki/Wikipedia:Content_translation_tool). First I tried to find if this URL could be localized on translatewiki.net but since I couldn't find anything I checked the code and found that the URL is hardcoded on mw.cx.UserPermissionChecker.js (gerrit) on line 65.
Since this feature of limiting newcomers from publishing translated articles into main namespace is in use on multiple projects we should have the possibility to localize the URL of the button.