trivial: Add DfuContext to the gtk-doc documentation
trivial: Add DfuContext to the gtk-doc documentation

hughsie/fwupd,fwupd/fwupd,vathpela/fwupd,vathpela/fwupd,vathpela/fwupd,vathpela/fwupd,superm1/fwupd,hughsie/fwupd,fwupd/fwupd,hughsie/fwupd,hughsie/fwupd,fwupd/fwupd,superm1/fwupd,fwupd/fwupd,superm1/fwupd