[Doc]: Update CPU image docs to use Docker Hub after 0.16.0 release

[nathan-weinberg]

📚 The doc issue

Follow up from #32032

Once we have CPU images published on Docker Hub, we should update the CPU image documentation to suggest using these base images over the AWS ECR images currently recommended

cc @bigPYJ1151 @fadara01

Suggest a potential alternative/fix

No response

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[nathan-weinberg]

Happy to own this if someone can assign me - I'll be keeping an eye out for these images anyway

[fadara01]

Thank you for taking care of this @nathan-weinberg :)