MDC-102 code uses "GridLayoutManager.VERTICAL" instead of "RecyclerView.VERTICAL"

[acutetech]

On the web page, the sample code in ProductGridFragment.java onCreateView() includes this:

recyclerView.setLayoutManager(new GridLayoutManager(getContext(), 2, GridLayoutManager.VERTICAL, false));

But GridLayoutManager.VERTICAL should be RecyclerView.VERTICAL

The finished-codelab code is correct.