updating comment

playbooks/edx-east/create_all_user_types.yml

-# Creates a single user on a server
-# By default no super-user privileges
-# Example: ansible-playbook -i "jarv.m.sandbox.edx.org,"  ./create_user.yml -e "user=jarv"
-# Create a user with sudo privileges
-# Example: ansible-playbook -i "jarv.m.sandbox.edx.org,"  ./create_user.yml -e "user=jarv" -e "give_sudo=true"
+# This is a test play that creates all supported user
+# types using the user role. Example only, not meant
+# to be run on a real system
 - name: Create all user types (test play)
   hosts: all
   sudo: True