There's no need to depend on gtk-doc to install .html files. See the tracking bug for details.
I'll wait when the situation is clarified. Cause of depending on gtk-doc is written in spec file: # .devhelp2 file is put into ${_datadir}/gtk-doc directory which is owned by # gtk-doc. And this is libvtemm-docs, not devel - changing subject.
Still present on F15. See the revised guidelines which mention specifically gtk-doc: http://fedoraproject.org/wiki/PackagingGuidelines#File_and_Directory_Ownership
I'll try fixing it in coming days.
Fixed in rawhide - for now I am not issuing a build.