fixed typo

templates/object_livestatuslistener.conf.erb

@@ -12,7 +12,7 @@
 
 library "livestatus"
 
-object LivestatusListener "<%= @object_livestatuslistenerdname %>" {
+object LivestatusListener "<%= @object_livestatuslistenername %>" {
   <%#- If any of the @ parameters are undefined, don't print anything for them: -%>
 
   <%- if @socket_type -%>