Correct unexpected indentation
Correct unexpected indentation

Unexpected indentation cause WARNING"toctree contains reference to
nonexisting document u'admin/:maxdepth: 1'". This patch removes
the extra line.

Change-Id: I67532eb839b44ddea5f444fc8df7fbec2452b629

stackforge/senlin,stackforge/senlin,openstack/senlin,openstack/senlin,openstack/senlin