docs: use use keyword

Author: kenjis

user_guide_src/source/tutorial/news_section.rst

@@ -166,6 +166,9 @@ add some code to the controller and create a new view. Go back to the
 
 .. literalinclude:: news_section/006.php
 
+Don't forget add ``use CodeIgniter\Exceptions\PageNotFoundException;`` to import
+the ``PageNotFoundException`` class.
+
 Instead of calling the ``getNews()`` method without a parameter, the
 ``$slug`` variable is passed, so it will return the specific news item.
 The only thing left to do is create the corresponding view at

user_guide_src/source/tutorial/news_section/006.php

@@ -3,6 +3,7 @@
 namespace App\Controllers;
 
 use App\Models\NewsModel;
+use CodeIgniter\Exceptions\PageNotFoundException;
 
 class News extends BaseController
 {
@@ -15,7 +16,7 @@ public function view($slug = null)
         $data['news'] = $model->getNews($slug);
 
         if (empty($data['news'])) {
-            throw new \CodeIgniter\Exceptions\PageNotFoundException('Cannot find the news item: ' . $slug);
+            throw new PageNotFoundException('Cannot find the news item: ' . $slug);
         }
 
         $data['title'] = $data['news']['title'];

user_guide_src/source/tutorial/static_pages.rst

@@ -89,6 +89,9 @@ in the ``Pages`` controller created above:
 
 .. literalinclude:: static_pages/002.php
 
+And add ``use CodeIgniter\Exceptions\PageNotFoundException;`` after the ``namespace`` line
+to import the ``PageNotFoundException`` class.
+
 Now, when the requested page does exist, it is loaded, including the header and
 footer, and returned to the user. If a controller returns a string, it is
 displayed to the user.

user_guide_src/source/tutorial/static_pages/002.php

@@ -2,6 +2,8 @@
 
 namespace App\Controllers;
 
+use CodeIgniter\Exceptions\PageNotFoundException; // Add this line
+
 class Pages extends BaseController
 {
     // ...
@@ -10,7 +12,7 @@ public function view($page = 'home')
     {
         if (! is_file(APPPATH . 'Views/pages/' . $page . '.php')) {
             // Whoops, we don't have a page for that!
-            throw new \CodeIgniter\Exceptions\PageNotFoundException($page);
+            throw new PageNotFoundException($page);
         }
 
         $data['title'] = ucfirst($page); // Capitalize the first letter