update links to the book

src/Core/App.php

@@ -38,7 +38,7 @@ use Cake\Core\Plugin;
  * Plugins can be located with App as well. Using Plugin::path('DebugKit') for example, will
  * give you the full path to the DebugKit plugin.
  *
- * @link http://book.cakephp.org/3.0/en/core-utility-libraries/app.html
+ * @link http://book.cakephp.org/3.0/en/core-libraries/app.html
  */
 class App
 {

src/Filesystem/File.php

@@ -33,7 +33,7 @@ class File
      * File name
      *
      * @var string
-     * http://book.cakephp.org/2.0/en/core-utility-libraries/file-folder.html#File::$name
+     * http://book.cakephp.org/3.0/en/core-libraries/file-folder.html#Cake\Filesystem\File::$name
      */
     public $name = null;
 
@@ -41,7 +41,7 @@ class File
      * File info
      *
      * @var array
-     * http://book.cakephp.org/2.0/en/core-utility-libraries/file-folder.html#File::$info
+     * http://book.cakephp.org/3.0/en/core-libraries/file-folder.html#Cake\Filesystem\File::$info
      */
     public $info = [];
 
@@ -49,7 +49,7 @@ class File
      * Holds the file handler resource if the file is opened
      *
      * @var resource
-     * http://book.cakephp.org/2.0/en/core-utility-libraries/file-folder.html#File::$handle
+     * http://book.cakephp.org/3.0/en/core-libraries/file-folder.html#Cake\Filesystem\File::$handle
      */
     public $handle = null;
 
@@ -57,7 +57,7 @@ class File
      * Enable locking for file reading and writing
      *
      * @var bool
-     * http://book.cakephp.org/2.0/en/core-utility-libraries/file-folder.html#File::$lock
+     * http://book.cakephp.org/3.0/en/core-libraries/file-folder.html#Cake\Filesystem\File::$lock
      */
     public $lock = null;
 
@@ -67,7 +67,7 @@ class File
      * Current file's absolute path
      *
      * @var mixed
-     * http://book.cakephp.org/2.0/en/core-utility-libraries/file-folder.html#File::$path
+     * http://book.cakephp.org/3.0/en/core-libraries/file-folder.html#Cake\Filesystem\File::$path
      */
     public $path = null;
 

src/Filesystem/Folder.php

@@ -66,7 +66,7 @@ class Folder
      * Mode to be used on create. Does nothing on windows platforms.
      *
      * @var int
-     * http://book.cakephp.org/2.0/en/core-utility-libraries/file-folder.html#Folder::$mode
+     * http://book.cakephp.org/3.0/en/core-libraries/file-folder.html#Cake\Filesystem\Folder::$mode
      */
     public $mode = 0755;
 

src/View/Helper/FormHelper.php

@@ -318,7 +318,7 @@ class FormHelper extends Helper
      *   to make a model-less form.
      * @param array $options An array of html attributes and options.
      * @return string An formatted opening FORM tag.
-     * @link http://book.cakephp.org/2.0/en/core-libraries/helpers/form.html#options-for-create
+     * @link http://book.cakephp.org/3.0/en/views/helpers/form.html#Cake\View\Helper\FormHelper::create
      */
     public function create($model = null, array $options = [])
     {