build: invalid browser name in karma config

Fixes the name of the default browser in the Karma config being invalid and throwing an error when running the tests locally.

Author: crisbeto

test/karma.conf.js

@@ -1,8 +1,7 @@
 const path = require('path');
 const {customLaunchers, platformMap} = require('./browser-providers');
 
-module.exports = (config) => {
-
+module.exports = config => {
   config.set({
     basePath: path.join(__dirname, '..'),
     frameworks: ['jasmine'],
@@ -74,7 +73,7 @@ module.exports = (config) => {
     browserNoActivityTimeout: 300000,
     captureTimeout: 180000,
 
-    browsers: ['ChromeHeadlessLocal'],
+    browsers: ['ChromeHeadless'],
     singleRun: false,
 
     // Try Websocket for a faster transmission first. Fallback to polling if necessary.