Clarify wording on namespace value

Author: gamingrobot

manifests/helm/values.yaml

@@ -1,5 +1,5 @@
 # Namespace for the agent-operator, will be created if specified.
-# When left blank the Helm namespace will be used and can be changed using `helm -n <namespace>`. Helm's `--create-namespace` option may be needed when the Helm namespace does not exist and should be created.
+# When left blank the Helm namespace will be used and can be changed using `helm -n <namespace>`. Helm's `--create-namespace` option should be used when the Helm namespace does not exist and should be created.
 namespace: contrast-agent-operator
 image:
   registry: contrast