sysutils/nut: Fix typo in snmp-ups driver (#1626)

* Update ups.conf

* Update Makefile

* Update Makefile

* Update Makefile

sysutils/nut/Makefile

@@ -1,5 +1,6 @@
 PLUGIN_NAME=		nut
 PLUGIN_VERSION=		1.6
+PLUGIN_REVISION=        1
 PLUGIN_COMMENT=		Network UPS Tools
 PLUGIN_DEPENDS=		nut
 PLUGIN_MAINTAINER=	m.muenz@gmail.com

sysutils/nut/src/opnsense/service/templates/OPNsense/Nut/ups.conf

@@ -59,7 +59,7 @@ driver=riello_usb
 {%   endif %}
 {%   if helpers.exists('OPNsense.Nut.snmp.enable') and OPNsense.Nut.snmp.enable == '1' %}
 [{{ OPNsense.Nut.general.name }}]
-driver=snmp_ups
+driver=snmp-ups
 {%     if helpers.exists('OPNsense.Nut.snmp.args') and OPNsense.Nut.snmp.args != '' %}
 {%       for args in OPNsense.Nut.snmp.args.split(',') %}
 {{ args }}