Support hyphen on attribute name

[leon-andria]

RKE2 configuration has hyphen on the attribute name as in the link below: https://docs.rke2.io/install/configuration?_highlight=config#configuration-file

Is there a way for KCL to support it?
For example:
write-kubeconfig-mode: "0644"

[leon-andria]

It sounds obvious but below is the answer:
`import yaml

rke2Config = {
'write-kubeconfig-mode' = "0644"
'tls-san' = ["foo.local"]
'node-label' = ["foo=bar", "something=amazing"]
debug = bool("true")
}

yaml.dump_to_file(rke2Config, "output.yaml")`

The confusion was to think yaml rather than KCL