fix(custom-jsdom-html): add Copyright Header

Author: MarvelSQ

e2e/custom-jsdom-html/__tests__/test.js

@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 test('jsdom custom html', () => {
   /* eslint-disable-next-line no-undef */
   expect(document.getElementById('root')).toBeTruthy();

e2e/custom-jsdom-html/babel.config.js

@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 module.exports = {
   presets: [
     [