fix(libvirt): Use networkd in network configuration example.
fix(libvirt): Use networkd in network configuration example.

hkjn/docs-1,robszumski/docs,mischief/coreos-docs,iankronquist/docs,joshix/docs,ionave/docs,endocode/coreos-docs,bq-xiao/docs,michelleN/docs,wli6/docs,coreos/docs,skynet/docs,jdloft/docs,atxwebs/docs,jonboulle/docs,marineam/coreos-docs,mjg59/docs,ksmaheshkumar/docs-2