trivial: Fix up whitespace issue in introspection
trivial: Fix up whitespace issue in introspection

rpm-software-management/libdnf,edynox/libdnf,Conan-Kudo/libhif,Conan-Kudo/libhif,hughsie/libhif,rpm-software-management/libhif,rpm-software-management/libhif,hughsie/libhif,rpm-software-management/libdnf,hughsie/libhif,edynox/libdnf,rpm-software-management/libdnf,edynox/libdnf,rpm-software-management/libhif,rpm-software-management/libdnf,Conan-Kudo/libhif,rpm-software-management/libhif,Conan-Kudo/libhif,hughsie/libhif,edynox/libdnf