Fix tests namespaces

Author: ogizanagi

Tests/Formatter/NullOutputFormatterStyleTest.php

@@ -9,7 +9,7 @@
  * file that was distributed with this source code.
  */
 
-namespace Symfony\Component\Console\Tests\Output;
+namespace Symfony\Component\Console\Tests\Formatter;
 
 use PHPUnit\Framework\TestCase;
 use Symfony\Component\Console\Formatter\NullOutputFormatterStyle;

Tests/Formatter/NullOutputFormatterTest.php

@@ -9,7 +9,7 @@
  * file that was distributed with this source code.
  */
 
-namespace Symfony\Component\Console\Tests\Output;
+namespace Symfony\Component\Console\Tests\Formatter;
 
 use PHPUnit\Framework\TestCase;
 use Symfony\Component\Console\Formatter\NullOutputFormatter;