Correct ec2_vol doc errors

ec2_vol

@@ -49,18 +49,24 @@ options:
 examples:
    - code: 'local_action: ec2_vol instance=XXXXXX volume_size=5 device_name=sdd'
      description: "Simple playbook example"
-   - code: '- name: Launch instances
+   - code: |
+            - name: Launch instances
               local_action: ec2 keypair=$keypair image=$image wait=true count=3
               register: ec2
             - name: Create volumes and attach
               local_action: ec2_vol instance=${item.id} volume_size=5
               with_items: ${ec2.instances}
-              register: ec2_vol'
-     description: "Advanced playbook example"   
+              register: ec2_vol
+     description: "Advanced - attaching multiple volumes to multiple instances"
 requirements: [ "boto" ]
 author: Lester Wade
 '''
 
+# Note: this module needs to be made idempotent. Possible solution is to use resource tags with the volumes.
+# if state=present and it doesn't exist, create, tag and attach. 
+# Check for state by looking for volume attachment with tag (and against block device mapping?).
+# Would personally like to revisit this in May when Eucalyptus also has tagging support (3.3).
+
 import sys
 import time