docs(ses): corrected default value as true for ConfigurationSet.reput…

…ationMetrics property (#30979)

### Issue # (if applicable)

Closes #30968.

### Reason for this change
The default value of `ConfigurationSet.reputationMetrics` if not set in the CDK stack is actually `true` (refer #30968 (comment) for details).

### Description of changes
Corrected default value as `true` for `ConfigurationSet.reputationMetrics` property in documentation comment.

### Description of how you validated changes
N/A

### Checklist
- [x] My code adheres to the [CONTRIBUTING GUIDE](https://github.com/aws/aws-cdk/blob/main/CONTRIBUTING.md) and [DESIGN GUIDELINES](https://github.com/aws/aws-cdk/blob/main/docs/DESIGN_GUIDELINES.md)

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*By submitting this pull request, I confirm that my contribution is made under the terms of the Apache-2.0 license*

packages/aws-cdk-lib/aws-ses/lib/configuration-set.ts

@@ -47,7 +47,7 @@ export interface ConfigurationSetProps {
    * Whether to publish reputation metrics for the configuration set, such as
    * bounce and complaint rates, to Amazon CloudWatch
    *
-   * @default false
+   * @default true
    */
   readonly reputationMetrics?: boolean;
 
@@ -220,4 +220,4 @@ function booleanToEnabledDisabled(value: boolean): 'ENABLED' | 'DISABLED' {
   return value === true
     ? 'ENABLED'
     : 'DISABLED';
-}
+}