chore(eks): update default capacity type from NODEGROUP to AUTOMODE in the doc

[pahud]

Issue # (if applicable)

Closes #33884

Reason for this change

The reason for this change is to correct the default value of the defaultCapacityType property in the AWS CDK's EKS V2 Alpha package. The current documentation incorrectly states that the default value is NODEGROUP, while the actual default value used in the code is AUTOMODE. This can cause confusion and errors for users.

Description of changes

Update the JSDoc comment in the cluster.ts file to correctly reflect that the default value of the defaultCapacityType property is AUTOMODE.

Describe any new or updated permissions being added

Description of how you validated changes

Checklist

• My code adheres to the CONTRIBUTING GUIDE and DESIGN GUIDELINES

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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

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 82.38%. Comparing base (b6a15f3) to head (86997b9).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main   #33886   +/-   ##
=======================================
  Coverage   82.38%   82.38%           
=======================================
  Files         120      120           
  Lines        6938     6938           
  Branches     1170     1170           
=======================================
  Hits         5716     5716           
  Misses       1119     1119           
  Partials      103      103           

Flag	Coverage Δ
suite.unit	82.38% <ø> (ø)

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Components	Coverage Δ
packages/aws-cdk	∅ <ø> (∅)
packages/aws-cdk-lib/core	82.38% <ø> (ø)

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Thank you for contributing! Your pull request will be updated from main and then merged automatically (do not update manually, and be sure to allow changes to be pushed to your fork).

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Thank you for contributing! Your pull request will be updated from main and then merged automatically (do not update manually, and be sure to allow changes to be pushed to your fork).

[aws-cdk-automation]

AWS CodeBuild CI Report

• CodeBuild project: AutoBuildv2Project1C6BFA3F-wQm2hXv2jqQv
• Commit ID: 86997b9
• Result: SUCCEEDED
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