docs: fix kustomize namePrefix misconception in application.yaml (#10162

)

* Update docs/operator-manual/application.yaml

- Removed comment about what namePrefix does. (i.e. it does not add a prefix to the image)
- Added examples of other supported transformers. (based on looking at the source code)
- Added link to the kustomize docs where the transormers are described in more detail.

* Update kustomize casing to be consistent

Signed-off-by: whyvez <yves@premise.com>

docs/operator-manual/application.yaml

@@ -69,11 +69,16 @@ spec:
     kustomize:
       # Optional kustomize version. Note: version must be configured in argocd-cm ConfigMap
       version: v3.5.4
-      # Optional image name prefix
+      # Supported kustomize transformers. https://kubectl.docs.kubernetes.io/references/kustomize/kustomization/
       namePrefix: prod-
-      # Optional images passed to "kustomize edit set image".
+      nameSuffix: -some-suffix
+      commonLabels:
+        foo: bar
+      commonAnnotations:
+        beep: boop
       images:
       - gcr.io/heptio-images/ks-guestbook-demo:0.2
+      - my-app=gcr.io/my-repo/my-app:0.1
 
     # directory
     directory: