chore: fix accidentally misconfigured lint setting

Author: chriskrycho

.eslintrc.js

@@ -6,7 +6,7 @@ module.exports = {
     ecmaVersion: 2017,
     sourceType: 'module',
   },
-  plugins: ['ember', '@typescript-eslint'],
+  plugins: ['ember', '@typescript-eslint', 'prettier'],
   extends: ['eslint:recommended', 'plugin:ember/recommended', 'prettier/@typescript-eslint'],
   env: {
     browser: true,

tests/dummy/app/router.js

@@ -6,6 +6,6 @@ const Router = EmberRouter.extend({
   rootURL: config.rootURL,
 });
 
-Router.map(function() {});
+Router.map(function () {});
 
 export default Router;