Fix a typo of python-cinderclient GITBRANCH

A left out N. Causes various failures in shell evaluation.

Change-Id: Icc09998c645ef2b975cb24b56d0f71c60289c188
diff --git a/stackrc b/stackrc
index c7bad78..d59166e 100644
--- a/stackrc
+++ b/stackrc
@@ -215,7 +215,7 @@
 
 # volume client
 GITREPO["python-cinderclient"]=${CINDERCLIENT_REPO:-${GIT_BASE}/openstack/python-cinderclient.git}
-GITBRACH["python-cinderclient"]=${CINDERCLIENT_BRANCH:-master}
+GITBRANCH["python-cinderclient"]=${CINDERCLIENT_BRANCH:-master}
 
 # python glance client library
 GITREPO["python-glanceclient"]=${GLANCECLIENT_REPO:-${GIT_BASE}/openstack/python-glanceclient.git}