docs: change view file name

Name by the controller method.

Author: kenjis

user_guide_src/source/tutorial/news_section.rst

@@ -143,7 +143,7 @@ the views. Modify the ``index()`` method to look like this:
 The code above gets all news records from the model and assigns it to a
 variable. The value for the title is also assigned to the ``$data['title']``
 element and all data is passed to the views. You now need to create a
-view to render the news items. Create **app/Views/news/overview.php**
+view to render the news items. Create **app/Views/news/index.php**
 and add the next piece of code.
 
 .. literalinclude:: news_section/005.php

user_guide_src/source/tutorial/news_section/004.php

@@ -16,7 +16,7 @@ public function index()
         ];
 
         return view('templates/header', $data)
-            . view('news/overview')
+            . view('news/index')
             . view('templates/footer');
     }