update password policy override

src/pages/[platform]/build-a-backend/auth/manage-users/manage-passwords/index.mdx

@@ -521,18 +521,23 @@ You can customize the password format acceptable by your auth backend. By defaul
 - `tempPasswordValidity`: 3 days
 
 ```ts title="amplify/backend.ts"
-// amplify/backend.ts
 import { defineBackend } from '@aws-amplify/backend';
 import { auth } from './auth/resource';
-import { data } from './data/resource';
 
 const backend = defineBackend({
   auth,
-  data
 });
-
-// extract L1 UserPool construct
+// extract L1 CfnUserPool resources
 const { cfnUserPool } = backend.auth.resources.cfnResources;
-// from the CDK use `addPropertyOverride` to modify properties directly
-cfnUserPool.addPropertyOverride('Policies.PasswordPolicy.MinimumLength', 32);
+// modify cfnUserPool policies directly
+cfnUserPool.policies = {
+  passwordPolicy: {
+    minimumLength: 32,
+    requireLowercase: true,
+    requireNumbers: true,
+    requireSymbols: true,
+    requireUppercase: true,
+    temporaryPasswordValidityDays: 20,
+  },
+};
 ```