docs(elbv2): metricRequestCountPerTarget docstring points to correct …

…replacement function (#25762)

Closes #25748.

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packages/aws-cdk-lib/aws-elasticloadbalancingv2/lib/alb/application-target-group.ts

@@ -516,7 +516,7 @@ export class ApplicationTargetGroup extends TargetGroupBase implements IApplicat
    * The only valid statistic is Sum. Note that this represents the average not the sum.
    *
    * @default Sum over 5 minutes
-   * @deprecated Use ``ApplicationTargetGroup.metrics.ipv6RequestCount`` instead
+   * @deprecated Use `ApplicationTargetGroup.metrics.requestCountPerTarget` instead
    */
   public metricRequestCountPerTarget(props?: cloudwatch.MetricOptions) {
     return this.metrics.requestCountPerTarget(props);