It's rather hard to notice, as it affects Gnome docs, BUT
only for packages, that haven't been updated to new gnome-doc-utils
(using gnome-doc-utils.make). IIRC, all packages, that are a part of Gnome
have migrated awhile ago.
omf file produced by rarian-sk-preinstall have incorrect file uri
('file:/' followed by absolute path, instead of 'file://').
The fix is obviously trivial.
To observe the bug, run yelp and try to follow links from main menu
to an affected package (i.e. qalculate-gtk in 'Utilities').
Created attachment 217939 [details, diff]
trivial patch fixing the problem
Fixed in -r1. Thanks for the patch and report