Description of problem:
Current CouchbaseCluster example has invalid image:

apiVersion: couchbase.com/v2
kind: CouchbaseCluster
metadata:
name: cb-example
namespace: test-operators
spec:
security:
adminSecret: cb-example-auth
rbac:
managed: true
selector:
matchLabels:
cluster: cb-example
backup:
serviceAccountName: couchbase-backup
image: >-
registry.connect.redhat.com/couchbase/operator-backup@sha256:3d0a9de740110b924b1ad5e83bb1e36b308f1b53f9e76a50cffcbeda9d34ea78
managed: false
selector:
matchLabels:
cluster: cb-example
enablePreviewScaling: false
recoveryPolicy: PrioritizeDataIntegrity
monitoring:
prometheus:
enabled: false
image: >-
registry.connect.redhat.com/couchbase/exporter@sha256:18015c72d17a33a21ea221d48fddf493848fc1ca5702007f289369c5815fb3df
hibernationStrategy: Immediate
buckets:
managed: true
selector:
matchLabels:
cluster: cb-example
upgradeStrategy: RollingUpgrade
servers:

• size: 3
  name: all_services
  services:
• data
• index
• query
• search
• eventing
• analytics
  hibernate: false
  networking:
  adminConsoleServices:
• data
  adminConsoleServiceType: NodePort
  exposeAdminConsole: true
  exposedFeatureServiceType: NodePort
  exposedFeatures:
• xdcr
  cluster:
  autoFailoverTimeout: 120s
  autoFailoverOnDataDiskIssues: true
  clusterName: cb-example
  indexStorageSetting: memory_optimized
  analyticsServiceMemoryQuota: 1Gi
  eventingServiceMemoryQuota: 256Mi
  searchServiceMemoryQuota: 256Mi
  autoFailoverMaxCount: 3
  dataServiceMemoryQuota: 256Mi
  autoFailoverOnDataDiskIssuesTimePeriod: 120s
  indexServiceMemoryQuota: 256Mi
  autoCompaction:
  databaseFragmentationThreshold:
  percent: 30
  size: 1Gi
  parallelCompaction: false
  timeWindow:
  abortCompactionOutsideWindow: true
  end: '06:00'
  start: '02:00'
  tombstonePurgeInterval: 72h
  viewFragmentationThreshold:
  percent: 30
  size: 1Gi
  autoFailoverServerGroup: false
  xdcr:
  managed: false
  selector:
  matchLabels:
  cluster: cb-example
  image: >-
  registry.connect.redhat.com/couchbase/server@sha256:fd6d9c0ef033009e76d60dc36f55ce7f3aaa942a7be9c2b66c335eabc8f5b11e
  logRetentionTime: 604800s
  logRetentionCount: 20
  status:
  size: 0

Fix the following errors:
Error "Invalid value: "registry.connect.redhat.com/couchbase/exporter@sha256:18015c72d17a33a21ea221d48fddf493848fc1ca5702007f289369c5815fb3df": spec.monitoring.prometheus.image in body should match '^[\w_\.\-/][\w\d])?\d+\.\d+.\d+([\w\d]+)?$'" for field "spec.monitoring.prometheus.image".

Version-Release number of selected component (if applicable):

2.1.0 provided by Couchbase
OCP: 4.8.0-0.nightly-2021-05-19-092807

How reproducible:
Always

Steps to Reproduce:
1.
2.
3.

Actual results:

Expected results:

Additional info: