Misprints on "Step 1 Overview" page of russian version

[niki4]

There are grammar misprints on page Обзор ("Step 1 Overview" of russian version).

I highlighted them, as well as another typo which is also on this page, but already noted in https://github.com/googlecodelabs/cloud-grpc/issues/10.

How these typos could be fixed: "тоже" -> "то же" "понадобиться" -> "понадобится"