chore(eks): kubectl docs updates (#22690)

Minor documentation updates for newly released kubectl layers.

----

### All Submissions:

* [ ] Have you followed the guidelines in our [Contributing guide?](https://github.com/aws/aws-cdk/blob/main/CONTRIBUTING.md)

### Adding new Unconventional Dependencies:

* [ ] This PR adds new unconventional dependencies following the process described [here](https://github.com/aws/aws-cdk/blob/main/CONTRIBUTING.md/#adding-new-unconventional-dependencies)

### New Features

* [ ] Have you added the new feature to an [integration test](https://github.com/aws/aws-cdk/blob/main/INTEGRATION_TESTS.md)?
	* [ ] Did you use `yarn integ` to deploy the infrastructure and generate the snapshot (i.e. `yarn integ` without `--dry-run`)?

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

Author: robertd

packages/@aws-cdk/aws-eks/README.md

@@ -680,20 +680,20 @@ The version of kubectl used must be compatible with the Kubernetes version of th
 cluster. kubectl is supported within one minor version (older or newer) of Kubernetes
 (see [Kubernetes version skew policy](https://kubernetes.io/releases/version-skew-policy/#kubectl)).
 Only version 1.20 of kubectl is available in `aws-cdk-lib`. If you need a different
-version, you will need to use one of the `@aws-cdk/lambda-layer-kubectlvXY` packages.
+version, you will need to use one of the `@aws-cdk/lambda-layer-kubectl-vXY` packages.
 
 ```ts
-import { KubectlV22Layer } from '@aws-cdk/lambda-layer-kubectl-v22';
+import { KubectlV23Layer } from '@aws-cdk/lambda-layer-kubectl-v23';
 
 const cluster = new eks.Cluster(this, 'hello-eks', {
-  version: eks.KubernetesVersion.V1_22,
-  kubectlLayer: new KubectlV22Layer(this, 'kubectl'),
+  version: eks.KubernetesVersion.V1_23,
+  kubectlLayer: new KubectlV23Layer(this, 'kubectl'),
 });
 ```
 
 You can also specify a custom `lambda.LayerVersion` if you wish to use a
 different version of these tools, or a version not available in any of the
-`@aws-cdk/lambda-layer-kubectlvXY` packages. The handler expects the layer to
+`@aws-cdk/lambda-layer-kubectl-vXY` packages. The handler expects the layer to
 include the following two executables:
 
 ```text