update comment

Author: badmintoncryer

packages/aws-cdk-lib/aws-eks/README.md

@@ -1848,6 +1848,8 @@ new eks.Addon(this, 'Addon', {
   cluster,
   addonName: 'aws-guardduty-agent',
   addonVersion: 'v1.6.1',
+  // whether to preserve the add-on software on your cluster but Amazon EKS stops managing any settings for the add-on.
+  preserveOnDelete: false,
 });
 ```