At
https://fedoraproject.org/wiki/PackageKit_Items_Not_Found#Missing_Codec,
in the last sentence, make a link out of the word "details", and link
to
https://fedoraproject.org/wiki/PackageKit_Items_Not_Found#Can.27t_you_pay...,
or perhaps create an anchor at the last paragraph in that section, and
link to it, so that it's easier for users to find the free mp3 decoder
from Fluendo.