Update example to be more yaml friendly

library/cloud/rax

@@ -91,8 +91,9 @@ EXAMPLES = '''
      name: rax-test1
      flavor: 5
      image: b11d9567-e412-4255-96b9-bd63ab23bcfe
-     files: [/root/.ssh/authorized_keys=/home/username/.ssh/id_rsa.pub,
+     files:
-             /root/test.txt=/home/username/test.txt]
+        - /root/.ssh/authorized_keys=/home/localuser/.ssh/id_rsa.pub
+        - /root/test.txt=/home/localuser/test.txt]
      wait: yes
      state: present
 '''