docs(tutorial): change controllers to not have name twice

While giving the controller function a name helps with debugging,
since otherwise your controller will be anonymous in stack traces,
passing the name to both the `controller()` method and as the function name
is confusing for beginners.

Closes #4415

Author: victorb

docs/content/tutorial/step_02.ngdoc

@@ -81,7 +81,7 @@ __`app/js/controllers.js`:__
 
 var phonecatApp = angular.module('phonecatApp', []);
 
-phonecatApp.controller('PhoneListCtrl', function PhoneListCtrl($scope) {
+phonecatApp.controller('PhoneListCtrl', function ($scope) {
   $scope.phones = [
     {'name': 'Nexus S',
      'snippet': 'Fast just got faster with Nexus S.'},

docs/content/tutorial/step_04.ngdoc

@@ -67,7 +67,7 @@ __`app/js/controllers.js`:__
 <pre>
 var phonecatApp = angular.module('phonecatApp', []);
 
-phonecatApp.controller('PhoneListCtrl', function PhoneListCtrl($scope) {
+phonecatApp.controller('PhoneListCtrl', function ($scope) {
   $scope.phones = [
     {'name': 'Nexus S',
      'snippet': 'Fast just got faster with Nexus S.',

docs/content/tutorial/step_05.ngdoc

@@ -56,7 +56,7 @@ __`app/js/controllers.js:`__
 <pre>
 var phonecatApp = angular.module('phonecatApp', []);
 
-phonecatApp.controller('PhoneListCtrl', function PhoneListCtrl($scope, $http) {
+phonecatApp.controller('PhoneListCtrl', function ($scope, $http) {
   $http.get('phones/phones.json').success(function(data) {
     $scope.phones = data;
   });
@@ -79,7 +79,7 @@ json response and parsed it for us!
 To use a service in angular, you simply declare the names of the dependencies you need as arguments
 to the controller's constructor function, as follows:
 
-    function PhoneListCtrl($scope, $http) {...}
+    phonecatApp.controller('PhoneListCtrl', function ($scope, $http) {...}
 
 Angular's dependency injector provides services to your controller when the controller is being
 constructed. The dependency injector also takes care of creating any transitive dependencies the
@@ -145,7 +145,7 @@ __`app/js/controllers.js:`__
 var phonecatApp = angular.module('phonecatApp', []);
 
 phonecatApp.controller('PhoneListCtrl', ['$scope', '$http',
-  function PhoneListCtrl($scope, $http) {
+  function ($scope, $http) {
     $http.get('phones/phones.json').success(function(data) {
       $scope.phones = data;
     });

docs/content/tutorial/step_07.ngdoc

@@ -149,7 +149,7 @@ __`app/js/controllers.js`:__
 var phonecatControllers = angular.module('phonecatControllers', []);
 
 phonecatControllers.controller('PhoneListCtrl', ['$scope', '$http',
-  function PhoneListCtrl($scope, $http) {
+  function ($scope, $http) {
     $http.get('phones/phones.json').success(function(data) {
       $scope.phones = data;
     });