Update docs to indicate that API values of []byte are always base64-encoded #72158
Description
What would you like to be added:
Extend the docs the clarify that various places there the API expects []byte that this is base64 encoded
Why is this needed:
I was looking at the 1.13 API docs for the conversion webhook and it said
`caBundle` is a PEM encoded CA bundle which will be used to validate the webhook's server certificate. If unspecified, system trust roots on the apiserver are used.
It's not obvious to me that this value should be base64 of the pem encoded contents
/kind feature