MAGETWO-34180: Active item in Nivagation menu is not highlighted

- fixed tests

Author: Natalia Momotenko

app/code/Magento/Catalog/Model/Observer.php

@@ -5,6 +5,9 @@
  */
 namespace Magento\Catalog\Model;
 
+/**
+ * @SuppressWarnings(PHPMD.CouplingBetweenObjects)
+ */
 class Observer
 {
     /**

app/code/Magento/Theme/Block/Html/Topmenu.php

@@ -229,8 +229,8 @@ protected function _getHtml(
 
             $html .= '<li ' . $this->_getRenderedMenuItemAttributes($child) . '>';
             $html .= '<a href="' . $child->getUrl() . '" ' . $outermostClassCode . '><span>' . $this->escapeHtml(
-                    $child->getName()
-                ) . '</span></a>' . $this->_addSubMenu(
+                $child->getName()
+            ) . '</span></a>' . $this->_addSubMenu(
                     $child,
                     $childLevel,
                     $childrenWrapClass,