add comment about resource not found
@@ -65,6 +65,7 @@ cd kapp
# to delete kalm operator & controller, run:
make delete
+# error like `Error from server (NotFound): error when deleting xxx not found` is safe to ignore because some resources may have been deleted hierarchically.
# to delete all things Kalm installed, including istio and cert-manager, run:
# make delete-all
