Update metrics.md to included quick start for node.enableMetrics

[cam634]

What type of PR is this?

/kind documentation

What is this PR about? / Why do we need it?

This pr adds documentation that seems to be missing for node.enableMetrics figured this would be important given the metric endpoints are on different ports

How was this change tested?

No test needed docs

Does this PR introduce a user-facing change?

NONE

[k8s-ci-robot]

Welcome @cam634!

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[k8s-ci-robot]

Hi @cam634. Thanks for your PR.

I'm waiting for a kubernetes-sigs member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

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[torredil]

/ok-to-test

[AndrewSirenko]

Don't worry about the test failures. We're seeing an increase in e2e test flakes, likely due to Kubernetes community releasing K8s 1.32 related components at the moment.

[k8s-ci-robot]

New changes are detected. LGTM label has been removed.

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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[k8s-ci-robot]

@cam634: The following test failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
pull-aws-ebs-csi-driver-test-e2e-external-eks-windows	380aa05	link	true	/test pull-aws-ebs-csi-driver-test-e2e-external-eks-windows

Full PR test history. Your PR dashboard. Please help us cut down on flakes by linking to an open issue when you hit one in your PR.

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes-sigs/prow repository. I understand the commands that are listed here.