Add missing brackets for function call

fix error "expects a Hash value, got Tuple"
thanks to @Hufschmidt

Author: gerlingsm

templates/vhost/_directories.erb

@@ -548,7 +548,7 @@
     <%= directory['custom_fragment'] %>
     <%- end -%>
     <%- if directory['authz_core'] -%>
-      <%= scope.call_function('epp',["apache/vhost/_authz_core.epp", 'authz_core_config' => scope.call_function('apache::authz_core_config', directory['authz_core'])]) -%>
+      <%= scope.call_function('epp',["apache/vhost/_authz_core.epp", 'authz_core_config' => scope.call_function('apache::authz_core_config', [ directory['authz_core'] ]) ]) -%>
     <%- end -%>
     <%- if directory['gssapi'] -%>
       <%= scope.call_function('epp',["apache/vhost/_gssapi.epp", directory['gssapi']]) -%>