refs #4996 fix namespace

plugins/Contents/tests/Fixtures/TwoVisitsWithContents.php

@@ -5,7 +5,7 @@
  * @link http://piwik.org
  * @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
  */
-namespace Piwik\Plugins\Contents\tests\fixtures;
+namespace Piwik\Plugins\Contents\tests\Fixtures;
 
 use Piwik\Date;
 use Piwik\Plugins\Goals\API as APIGoals;