The ACM documentation [0] lists the ACM image to integrate ACM with OpenShift GitOps in step 2 as `registry.redhat.io/rhacm2/multicluster-operators-subscription-rhel8` however for ACM 2.10 this image name changed to "rhel9".

After upgrading to ACM 2.10 OpenShift GitOps becomes inaccessable because the image listed does not exist.

Documentation should be updated to `registry.redhat.io/rhacm2/multicluster-operators-subscription-rhel9`.

The path to the PolicyGenerator is also changing. This:

cp /etc/kustomize/plugin/policy.open-cluster-management.io/v1/policygenerator/PolicyGenerator
        /policy-generator/PolicyGenerator

Is now:

cp /policy-generator/PolicyGenerator-not-fips-compliant /policy-generator/PolicyGenerator

Additionally please consider changing the alternative note to lookup the image from the ACM deployment which would be more resilient to changes:
```
image: '{{ (index (lookup "apps/v1" "Deployment" "open-cluster-management" "multicluster-operators-hub-subscription").spec.template.spec.containers 0).image }}'
```

[0] https://access.redhat.com/documentation/en-us/red_hat_advanced_cluster_management_for_kubernetes/2.10/html-single/gitops/index#policy-gen-install-on-openshift-gitops