added _ to service name

manifests/nagios/objects/add_contactgroups.pp

@@ -20,6 +20,12 @@
 #    along with this program.  If not, see <http://www.gnu.org/licenses/>
 # @summary  Define populates /etc/nagios/conf.d/nagios_add_contactgroups through
 #   external puppet rules.
+# @param [string] ng_contactgroup_name Specify the short name of the
+#   contact group.
+# @param  [string]  ng_contactgroup_alias Specify the alias (long name) of the
+#   contact group
+# @param  [string] ng_contactgroup_register Specify whether the contact group
+#   should be registered in Nagios.
 ################################################################################
 define cd_nagios::nagios::objects::add_contactgroups (