fix null ref in m.module example in docs

archive/v0.1/mithril.module.html

@@ -76,7 +76,7 @@ var dashboardController = function() {
 };
 
 //view class
-var dashboardView = function() {
+var dashboardView = function(ctrl) {
     return m("h1", ctrl.greeting);
 };
 
@@ -92,7 +92,7 @@ dashboard.controller = function() {
 };
 
 //view class
-dashboard.view = function() {
+dashboard.view = function(ctrl) {
     return m("h1", ctrl.greeting);
 };