Fix tests comma-dangle eslint rule [MAILPOET-1028]

tests/javascript/newsletter_editor/components/styles.spec.js

@@ -6,7 +6,7 @@ define([
   describe('Styles', function () {
     it('loads and stores globally available styles', function() {
       StylesComponent.setGlobalStyles({
-        testStyle: 'testValue',
+        testStyle: 'testValue'
       });
       var model = StylesComponent.getGlobalStyles();
       expect(model.get('testStyle')).to.equal('testValue');
@@ -22,7 +22,7 @@ define([
         var mock = sinon.mock({ trigger: function(){}}).expects('trigger').once().withExactArgs('autoSave');
         EditorApplication.getChannel = function() {
           return {
-            trigger: mock,
+            trigger: mock
           };
         };
         model.set('text.fontColor', '#123456');