AWS EKS control plane logging example incorrectly shows use of custom log group

[metral]

File: docs/reference/pkg/nodejs/pulumi/aws/eks/_index.md

The "Enabling Control Plane Logging" example in this file is incorrect, as AWS manages the log group and logs for the control plane. User's cannot provide their own exampleLogGroup as the example demonstrates per the AWS docs, and even in how the example is written, the group is only being dependedOn -- it's not actually being used by the cluster.

The exampleLogGroup should be removed all-together.

Note: not sure if these docs are being auto-generated or were manually constructed.