Update src/Cli.php, reformated to PSR12

Author: prusov-code

src/Cli.php

@@ -5,9 +5,9 @@
 use function Cli\line;
 use function Cli\prompt;
 
-function sayHello():void {
+function sayHello(): void
+{
     line('Welcome to the Brain Game!');
     $name = prompt('May I have your name?');
     line("Hello, %s!", $name);
 }
-