Fix license headers

Summary:
@public

Yoga's Java license headers were not in the correct format.

Reviewed By: muraziz

Differential Revision: D14541087

fbshipit-source-id: 5b3cff398875bd59dadeaddbb43020700ef027e2

ReactAndroid/src/main/java/com/facebook/yoga/YogaDirection.java

@@ -1,9 +1,8 @@
-/*
- *  Copyright (c) Facebook, Inc.
- *
- *  This source code is licensed under the MIT license found in the LICENSE
- *  file in the root directory of this source tree.
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
+ * This source code is licensed under the MIT license found in the LICENSE
+ * file in the root directory of this source tree.
  */
 package com.facebook.yoga;