(docs): Add missing $ in $stateChangeError

Author: Urigo

.docs/angular-meteor/client/views/api/api.auth.html

@@ -149,7 +149,7 @@ <h3><p><code><span class="pln">requireUser();</span></code></p></h3>
     });
 
     app.run(["$rootScope", "$location", function($rootScope, $location) {
-      $rootScope.$on("stateChangeError", function(event, next, previous, error) {
+      $rootScope.$on("$stateChangeError", function(event, next, previous, error) {
         // We can catch the error thrown when the $meteor.requireUser() promise is rejected
         // and redirect the user back to the login page
         if (error === "AUTH_REQUIRED") {

.docs/angular-meteor/client/views/steps/tutorial.step_08.html

@@ -232,7 +232,7 @@ <h1>
 __`client/routes.js`:__
 
     angular.module("socially").run(["$rootScope", "$location", function($rootScope, $location) {
-      $rootScope.$on("stateChangeError", function(event, next, previous, error) {
+      $rootScope.$on("$stateChangeError", function(event, next, previous, error) {
         // We can catch the error thrown when the $requireUser promise is rejected
         // and redirect the user back to the main page
         if (error === "AUTH_REQUIRED") {