Missing annotation info in HCP disconnected baremetal instructions

[cwilkers]

At the following ref, there are instructions to pull an operator release image for use in an annotation for a new HostedCluster deployment.
The actual annotation to use is not mentioned, nor is there an example of applying the annotation using oc annotate.

openshift-docs/modules/hcp-hc-objects.adoc

Line 193 in 7999f89

. Add an annotation in the `HostedCluster` object that points to the HyperShift Operator release in the {product-title} release:

[openshift-bot]

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[csrwng]

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