docs(integ-tests-alpha): correct integ-runner link in README (#34742)

### Reason for this change

Corrects link to `integ-runner` after it has been moved to the `aws-cdk-cli` repo. 

### Description of changes

Changed link.

### Describe any new or updated permissions being added

None.


### Description of how you validated changes

Link works.

### 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*

Author: Abogical

packages/@aws-cdk/integ-tests-alpha/README.md

@@ -18,7 +18,7 @@
 
 ## Overview
 
-This library is meant to be used in combination with the [integ-runner](https://github.com/aws/aws-cdk/tree/main/packages/%40aws-cdk/integ-runner) CLI
+This library is meant to be used in combination with the [integ-runner](https://github.com/aws/aws-cdk-cli/tree/main/packages/%40aws-cdk/integ-runner) CLI
 to enable users to write and execute integration tests for AWS CDK Constructs.
 
 An integration test should be defined as a CDK application, and