Fix typo in gvir_config_init's comment
Fix typo in gvir_config_init's comment

This broke the generated Vala API.

Signed-off-by: Claudio Bley <620c9bdd34d39ed7d11f660475ae3b725e767808@av-test.de>

libvirt/libvirt-glib,libvirt/libvirt-glib,libvirt/libvirt-glib