Change "secrete" to "secret"

Apparently this is intentional as a joke on devstack leaking
passwords, but the dual meaning of the word confuses people.  Let's
change it before we get yet another review fixing it.

Change-Id: I3bee03612f6ea197362aab04a37f81043f77f235
diff --git a/doc/source/guides/multinode-lab.rst b/doc/source/guides/multinode-lab.rst
index 392bb1b..c996f95 100644
--- a/doc/source/guides/multinode-lab.rst
+++ b/doc/source/guides/multinode-lab.rst
@@ -129,8 +129,8 @@
     LOGFILE=/opt/stack/logs/stack.sh.log
     ADMIN_PASSWORD=labstack
     DATABASE_PASSWORD=supersecret
-    RABBIT_PASSWORD=supersecrete
-    SERVICE_PASSWORD=supersecrete
+    RABBIT_PASSWORD=supersecret
+    SERVICE_PASSWORD=supersecret
 
 In the multi-node configuration the first 10 or so IPs in the private
 subnet are usually reserved. Add this to ``local.sh`` to have it run
@@ -169,8 +169,8 @@
     LOGFILE=/opt/stack/logs/stack.sh.log
     ADMIN_PASSWORD=labstack
     DATABASE_PASSWORD=supersecret
-    RABBIT_PASSWORD=supersecrete
-    SERVICE_PASSWORD=supersecrete
+    RABBIT_PASSWORD=supersecret
+    SERVICE_PASSWORD=supersecret
     DATABASE_TYPE=mysql
     SERVICE_HOST=192.168.42.11
     MYSQL_HOST=$SERVICE_HOST
@@ -254,7 +254,7 @@
 
     # Add a user and project
     NAME=bob
-    PASSWORD=BigSecrete
+    PASSWORD=BigSecret
     PROJECT=$NAME
     openstack project create $PROJECT
     openstack user create $NAME --password=$PASSWORD --project $PROJECT