doc: Update the usage to reflect optional directory name.

Signed-off-by: John Wilkins <john.wilkins@inktank.com>

diff --git a/doc/start/quick-start-preflight.rst b/doc/start/quick-start-preflight.rst
index ac60a456ba39c2bede385de990d1a37c998d1fb5..6cfefb6932003f6ebb99ee59e1140fb644404fd0 100644 (file)
--- a/doc/start/quick-start-preflight.rst
+++ b/doc/start/quick-start-preflight.rst
@@ -107,8 +107,10 @@ Clone ceph-deploy
 
 To begin working with ``ceph-deploy``, clone its repository. :: 
 
-       git clone https://github.com/ceph/ceph-deploy.git ceph-deploy
+       git clone https://github.com/ceph/ceph-deploy.git [{directory-name}]
 
+If you do not specify a directory name, ``git clone`` will use the repository
+name ``ceph-deploy``.
 
 Install python-virtualenv
 =========================