Update ai_platform.ipynb

[gogasca]

Update to ai-platform command instead of legacy ml-engine

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[k8s-ci-robot]

Hi @gogasca. Thanks for your PR.

I'm waiting for a kubeflow 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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[numerology]

Do you mind removing the new \n in the end?

[numerology]

I mean adding back.

[gogasca]

Got it, I edited with GitHub file editor, looks like it does that by default.

[numerology]

/ok-to-test

[Ark-kun]

/lgtm
/approve

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