Translations:Gentoo Wiki:FAQ/24/en
From Gentoo Wiki
This error is the abuse filter triggering when trying to link to an internal wiki page in the style "https://wiki.gentoo.org/wiki/<pagename>" (to be precise, anything containing "//wiki.gentoo.org/", with one exception). This is to avoid anyone using absolute links to reference wiki articles, as this does not allow the wiki to track links properly.