adding comment

playbooks/library/supervisorctl

@@ -185,6 +185,9 @@ def main():
         if '%s: started' % name in out:
             module.exit_json(changed=True, name=name, state=state)
         elif '%s: ERROR (already started)' % name in out:
+            # addresses a race condition if update is called
+            # immediately before started and the service is set
+            # to start automatically
             module.exit_json(changed=False, name=name, state=state)
 
         module.fail_json(msg=out)