revert changes to manager_image_patch file

Author: dranicu

config/default/manager_image_patch.yaml

@@ -9,4 +9,4 @@ spec:
       containers:
         # Change the value of image field below to your controller image URL
         - image:  ghcr.io/oracle/cluster-api-oci-controller-amd64:dev
-          name: manager
+          name: manager