cosmetic changes incorrectly change internal link
[[https://cs.wikipedia.org/wiki/Kategorie:Foo]] -> [[Kategorie:Foo]] but should be [[:Kategorie:Foo]]
See
https://cs.wikipedia.org/w/index.php?title=Wikipedie:Pod_l%C3%ADpou&diff=13379298&oldid=13379065 (line 323+2 of new version)