chore(helm): Show example for overriding the operator image tag

Author: NickLarsenNZ

deploy/helm/listener-operator/values.yaml

@@ -3,6 +3,7 @@
 # Used by both the Controller Service and Node Service containers
 image:
   repository: oci.stackable.tech/sdp/listener-operator
+  # tag: 0.0.0-dev
   pullPolicy: IfNotPresent
   pullSecrets: []
 
@@ -128,7 +129,7 @@ labels:
 kubeletDir: /var/lib/kubelet
 
 # Options: none, stable-nodes, ephemeral-nodes
-# none: No ListenerClasses are preinstalled, the administrator must supply them themself
+# none: No ListenerClasses are preinstalled, administrators must supply them themselves
 # stable-nodes: ListenerClasses are preinstalled that are suitable for on-prem/"pet" environments, assuming long-running Nodes but not requiring a LoadBalancer controller
 # ephemeral-nodes: ListenerClasses are preinstalled that are suitable for cloud/"cattle" environments with short-lived nodes, however this requires a LoadBalancer controller to be installed
 preset: stable-nodes