fix(card): remove duplicate demo module names.

* The three card demos always used the same, first module.

Closes #7693

Author: devversion

src/components/card/demoCardActionButtons/script.js

@@ -1,5 +1,5 @@
 
-angular.module('cardDemo1', ['ngMaterial'])
+angular.module('cardDemo2', ['ngMaterial'])
 
 .controller('AppCtrl', function($scope) {
   $scope.imagePath = 'img/washedout.png';

src/components/card/demoInCardActions/script.js

@@ -1,5 +1,5 @@
 
-angular.module('cardDemo1', ['ngMaterial'])
+angular.module('cardDemo3', ['ngMaterial'])
 
 .controller('AppCtrl', function($scope) {
   $scope.imagePath = 'img/washedout.png';