Fix typos in README

Author: Tearth

README.md

@@ -6,7 +6,7 @@ A brand new UCI-compliant chess engine written in C# for .NET Core platform. The
 ![asd](https://i.imgur.com/ck4GbbF.png)
 
 ## How to play?
-The simplest way is to download the newest version from the [Releases page](https://github.com/Tearth/Cosette/releases) and use it with graphical interface like Arena or WinBoard. Engine has been tested extensively on the first one, but should work with every UCI-compliant GUI.
+The simplest way is to download the newest version from the [Releases page](https://github.com/Tearth/Cosette/releases) and use it with a graphical interface like Arena or WinBoard. The engine has been tested extensively on the first one, but should work with every UCI-compliant GUI.
 
 Cosette has an official account on [lichess.org](https://lichess.org/) platform, which allows everybody to challenge her - feel free to do it!