Add EditorConfig Go Core contributors

Author: Ph0tonic

index.html

@@ -236,6 +236,7 @@ <h3>Main Contributors</h3>
       <li>EditorConfig Python Core: <a href="http://treyhunner.com">Trey Hunner</a></li>
       <li>EditorConfig .NET Core: <a href="http://localghost.io/">Martijn Laarman</a></li>
       <li>EditorConfig Ruby Core: <a href="https://github.com/josh">Joshua Peek</a> and <a href="https://github.com/brianmario">Brian Lopez</a></li>
+      <li>EditorConfig Go Core: <a href="https://github.com/greut">Greut</a> and <a href="https://github.com/andreynering">Andrey Nering</a></li>
     </ul>
 
     <p>Editor Plugins:</p>