docs(cloudfront): add example to update Cloudfront publickey

[leonmk-aws]

Issue # (if applicable)

Related to #15301.

Reason for this change

Users wanted a more detailed guide on how to update the encodedKey.

Description of changes

Add an example to show how to update the key, replaced logical id by id for more clarity.

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

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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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This pull request has been removed from the queue for the following reason: pull request branch update failed.

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You should update or rebase your pull request manually. If you do, this pull request will automatically be requeued once the queue conditions match again.
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[mergify]

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).

[leonmk-aws]

@Mergifyio requeue

[mergify]

requeue

✅ The queue state of this pull request has been cleaned. It can be re-embarked automatically

[mergify]

This pull request has been removed from the queue for the following reason: pull request branch update failed.

The pull request can't be updated.

You should update or rebase your pull request manually. If you do, this pull request will automatically be requeued once the queue conditions match again.
If you think this was a flaky issue, you can requeue the pull request, without updating it, by posting a @mergifyio requeue comment.

[aws-cdk-automation]

AWS CodeBuild CI Report

• CodeBuild project: AutoBuildv2Project1C6BFA3F-wQm2hXv2jqQv
• Commit ID: 5ac4f38
• Result: SUCCEEDED
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[mergify]

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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