update readme

Author: ashikov

README.md

@@ -20,6 +20,10 @@ $filter = filter($list, fn($x) => $x % 2 == 0);
 $result = toString($filter); // $result = "(2, 4, 6)";
 ```
 
-[![Hexlet Ltd. logo](https://raw.githubusercontent.com/Hexlet/assets/master/images/hexlet_logo128.png)](https://ru.hexlet.io/pages/about?utm_source=github&utm_medium=link&utm_campaign=php-pairs-data)
+---
 
-This repository is created and maintained by the team and the community of Hexlet, an educational project. [Read more about Hexlet (in Russian)](https://ru.hexlet.io/pages/about?utm_source=github&utm_medium=link&utm_campaign=php-pairs-data).
+[![Hexlet Ltd. logo](https://raw.githubusercontent.com/Hexlet/assets/master/images/hexlet_logo128.png)](https://hexlet.io/pages/about?utm_source=github&utm_medium=link&utm_campaign=php-pairs-data)
+
+This repository is created and maintained by the team and the community of Hexlet, an educational project. [Read more about Hexlet](https://hexlet.io/pages/about?utm_source=github&utm_medium=link&utm_campaign=php-pairs-data).
+
+See most active contributors on [hexlet-friends](https://friends.hexlet.io/).