Fix a small architectural error
Fix a small architectural error

Originally magnum-conductor was called magnum-backend, but was renamed.
Apparently the documentation didn't get completely modified.

Change-Id: I369a21b4b05192ea16171f53089c5220bd5c8ef5

Alzon/SUR,paulczar/magnum,ArchiFleKs/magnum,dimtruck/magnum,sajuptpm/magnum,sajuptpm/magnum,Tennyson53/SUR,ddepaoli3/magnum,ffantast/magnum,ramielrowe/magnum,LaynePeng/magnum,ChengTiesheng/magnum,ddepaoli3/magnum,openstack/magnum,Tennyson53/magnum,ramielrowe/magnum,Tennyson53/magnum,Alzon/SUR,mjbrewer/testindex,openstack/magnum,ffantast/magnum,eshijia/magnum,LaynePeng/magnum,annegentle/magnum,Tennyson53/SUR,eshijia/magnum,mjbrewer/testindex,dimtruck/magnum,hongbin/magnum,eshijia/SUR,annegentle/magnum,ChengTiesheng/magnum,mjbrewer/testindex,hongbin/magnum,eshijia/SUR,jay-lau/magnum,ArchiFleKs/magnum,paulczar/magnum