Fixing documentation formatting of Controller::renderTemplate().

core/Plugin/Controller.php

@@ -252,13 +252,13 @@ abstract class Controller
      * Assigns the given variables to the template and renders it.
      *
      * Example:
-     * ```
- public function myControllerAction () {
-    return $this->renderTemplate('index', array(
-        'answerToLife' => '42'
-    ));
- }
-     ```
+     *
+     *     public function myControllerAction () {
+     *        return $this->renderTemplate('index', array(
+     *            'answerToLife' => '42'
+     *        ));
+     *     }
+     *
      * This will render the 'index.twig' file within the plugin templates folder and assign the view variable
      * `answerToLife` to `42`.
      *