style(libsaltcli): fix comments to jinja comments [skip ci]

* Automated using myii/ssf-formula#418

Author: stasjok

openvpn/libsaltcli.jinja

@@ -1,5 +1,5 @@
-# -*- coding: utf-8 -*-
-# vim: ft=jinja
+{#- -*- coding: utf-8 -*- #}
+{#- vim: ft=jinja #}
 
 {#- Get the relevant values from the `opts` dict #}
 {%- set opts_cli = opts.get('__cli', '') %}