OCBPUGS-41822 updated nw-ovn-ipsec-north-south-enable document under external traffic

Author: wgabor0427

modules/nw-ovn-ipsec-north-south-enable.adoc

@@ -179,7 +179,7 @@ done
 [source,terminal]
 ----
 $ for role in master worker; do
-  butane 99-ipsec-${role}-endpoint-config.bu -o ./99-ipsec-$role-endpoint-config.yaml
+  butane -d . 99-ipsec-${role}-endpoint-config.bu -o ./99-ipsec-$role-endpoint-config.yaml
 done
 ----