Apply fixes from StyleCI

Author: StyleCIBot

src/UnderscoreFunction.php

@@ -91,8 +91,8 @@ public function throttle(callable $fn, $wait)
      *
      * Note that last function is executed first.
      *
-     * @param callable         $fn1
-     * @param callable         $fn2
+     * @param callable $fn1
+     * @param callable $fn2
      * @param ...callable|null $fn3 And so on!
      *
      * @return mixed Final result value.

tests/HigherOrderMessageTest.php

@@ -12,7 +12,7 @@
 namespace Ahc\Underscore\Test;
 
 use Ahc\Underscore\HigherOrderMessage;
-use PHPUnit\Framework\TestCase as TestCase;
+use PHPUnit\Framework\TestCase;
 
 class HOM
 {