Updated rad_install_kubernetes.md page with other arguments and ref link for installing radius with helmchart

[ckansara16]

…ink for installing radius with helmchart

Updated page for radius-project/radius#7968

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Issue reference

[Reshrahim]

@ckansara16 - Thank you for your contribution. The CLI docs are auto generated from the Radius repository. Can you close this PR and make changes here -https://github.com/radius-project/radius/blob/main/pkg/cli/cmd/install/kubernetes/kubernetes.go

[ckansara16]

@ckansara16 - Thank you for your contribution. The CLI docs are auto generated from the Radius repository. Can you close this PR and make changes here -https://github.com/radius-project/radius/blob/main/pkg/cli/cmd/install/kubernetes/kubernetes.go

ok, thanks for link. will update from there.