Update modules/installation/proc-rhdh-deploy-gke-operator.adoc

Co-authored-by: Heena Manwani <[email protected]>

Author: Gerry-Forde

modules/installation/proc-rhdh-deploy-gke-operator.adoc

@@ -123,7 +123,7 @@ EOF
 kubectl -n rhdh-operator get pods -w
 ----
 
-If the operator pod shows `ImagePullBackOff` status, then you might need permissions to pull the image directly within the Operator deployment's manifest.
+If the Operator pod shows `ImagePullBackOff` status, you might need permission to pull the image directly within the Operator deployment's manifest.
 
 [TIP]
 ====