docs(elasticloadbalancingv2): removed statement reg unhealthyThresholdCount (#32387)

### Issue # (if applicable)

Closes #32365 .

### Reason for this change

There is no mention of `unHealthyThresholdCount` being the same with `healthyThresholdCount` in case of NLB in ELBV2 as stated in given docs - 

- cloudformation docs - https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-elasticloadbalancingv2-targetgroup.html#cfn-elasticloadbalancingv2-targetgroup-healthythresholdcount
- AWS Docs -https://docs.aws.amazon.com/elasticloadbalancing/latest/network/target-group-health-checks.html


### Description of changes

removed the in-line comment


### Checklist
- [ ] 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)

----

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

Author: khushail

packages/aws-cdk-lib/aws-elasticloadbalancingv2/lib/shared/base-target-group.ts

@@ -155,7 +155,7 @@ export interface HealthCheck {
    * The number of consecutive health check failures required before considering a target unhealthy.
    *
    * For Application Load Balancers, the default is 2. For Network Load
-   * Balancers, this value must be the same as the healthy threshold count.
+   * Balancers, the range is between 2-10 and can be set accordingly.
    *
    * @default 2
    */