Reworded the docs about storing sessions in database

Author: javiereguiluz

_build/redirection_map

@@ -456,3 +456,5 @@
 /templating/namespaced_paths /templates
 /templating/embedding_controllers /templates
 /templating/inheritance /templates
+/doctrine/pdo_session_storage /session/database
+/doctrine/mongodb_session_storage /session/database

doctrine/mongodb_session_storage.rst

@@ -1154,6 +1154,8 @@ The service id used for session storage. The ``session.storage`` service
 alias will be set to this service id. This class has to implement
 :class:`Symfony\\Component\\HttpFoundation\\Session\\Storage\\SessionStorageInterface`.
 
+.. _config-framework-session-handler-id:
+
 handler_id
 ..........
 
@@ -1162,10 +1164,7 @@ handler_id
 The service id used for session storage. The default ``null`` value means to use
 the native PHP session mechanism. Set it to ``'session.handler.native_file'`` to
 let Symfony manage the sessions itself using files to store the session
-metadata.
-
-If you prefer to make Symfony store sessions in a database read
-:doc:`/doctrine/pdo_session_storage`.
+metadata. You can also :doc:`store sessions in a database </session/database>`.
 
 .. _name:
 

doctrine/pdo_session_storage.rst

@@ -121,9 +121,8 @@ session metadata files:
         ]);
 
 Check out the Symfony config reference to learn more about the other available
-:ref:`Session configuration options <config-framework-session>`. Also, if you
-prefer to store session metadata in a database instead of the filesystem,
-check out this article: :doc:`/doctrine/pdo_session_storage`.
+:ref:`Session configuration options <config-framework-session>`. You can also
+:doc:`store sessions in a database </session/database>`.
 
 Basic Usage
 -----------
@@ -219,7 +218,7 @@ More about Sessions
 .. toctree::
     :maxdepth: 1
 
-    /doctrine/pdo_session_storage
+    /session/database
     session/locale_sticky_session
     session/php_bridge
     session/proxy_examples