update description of ControllerManagerFactory

Author: samsonasik

src/Service/ControllerManagerFactory.php

@@ -13,6 +13,13 @@
 use Zend\ServiceManager\FactoryInterface;
 use Zend\ServiceManager\ServiceLocatorInterface;
 
+/**
+ * Factory class used for instantiation of ControllerManager class,
+ * ControllerManager will be registered as 'ControllerManager' manager
+ * and 'ControllerManager' manager can call the Controller service
+ * via
+ * $services->get('ControllerManager')->get('Namespace\Controller\ControllerName')
+ */
 class ControllerManagerFactory implements FactoryInterface
 {
     /**