Update the doc urls

app/config/security.yml

@@ -1,17 +1,18 @@
 security:
     encoders:
         # Our user class and the algorithm we'll use to encode passwords
-        # http://symfony.com/doc/current/book/security.html#encoding-the-user-s-password
+        # http://symfony.com/doc/current/security.html#c-encoding-the-user-s-password
         AppBundle\Entity\User: bcrypt
 
     providers:
-        # in this example, users are stored via Doctrine in the database
+        # http://symfony.com/doc/current/security.html#b-configuring-how-users-are-loaded
+        # In this example, users are stored via Doctrine in the database
         # To see the users at src/AppBundle/DataFixtures/ORM/LoadFixtures.php
-        # To load users from somewhere else: http://symfony.com/doc/current/cookbook/security/custom_provider.html
+        # To load users from somewhere else: http://symfony.com/doc/current/security/custom_provider.html
         database_users:
             entity: { class: AppBundle:User, property: username }
 
-    # http://symfony.com/doc/current/book/security.html#firewalls-authentication
+    # http://symfony.com/doc/current/security.html#initial-security-yml-setup-authentication
     firewalls:
         secured_area:
             # this firewall applies to all URLs
@@ -22,15 +23,15 @@ security:
             anonymous: true
 
             # This allows the user to login by submitting a username and password
-            # Reference: http://symfony.com/doc/current/cookbook/security/form_login_setup.html
+            # Reference: http://symfony.com/doc/current/security/form_login_setup.html
             form_login:
                 # The route name that the login form submits to
                 check_path: security_login
                 # The name of the route where the login form lives
                 # When the user tries to access a protected page, they are redirected here
                 login_path: security_login
                 # Secure the login form against CSRF
-                # Reference: http://symfony.com/doc/current/cookbook/security/csrf_in_login_form.html
+                # Reference: http://symfony.com/doc/current/security/csrf_in_login_form.html
                 csrf_token_generator: security.csrf.token_manager
                 # The page users are redirect to when there is no previous page stored in the
                 # session (for example when the users access directly to the login page).