[Doc] Add instructions to use -aarch64 tag for images for M1 Mac in KubeRay YAMLs

[architkulkarni]

Some users want to test KubeRay locally on M1 Mac, but it fails with unhelpful error messages, e.g. Raylet is considered dead.

At a minimum, we should

• Detect that we're on M1 and print a helpful error message
• Mention this prominently in the docs (I didn't see any such mention and I was looking for it)

UPDATE: Actually, it works if you use the -aarch64 in the image name. We should add this to the documentation, and investigate if it's possible to automatically use the correct image (since otherwise users have to manually edit any sample YAML that they want to try)

[z103cb]

@architkulkarni I have had no problems with the -aarch64 ray images on M1 MackBook pro. I do use rancher desktop with kind. Perhaps documenting that might a good / better option.

Also adding support for the that architecture for the kuberay images might not be a bad thing. There's a PR for this already: #1442.

[architkulkarni]

Thanks! I can also confirm that adding the tag -aarch64 makes it work. I'll leave this issue open to track improving the documentation, because I don't think it'll be obvious to users and right now there's no clear error message.