update best practices index

This way, the table of contents on the index page has only one level
like every other index in the documentation.

Author: xabbuh

best_practices/index.rst

@@ -2,6 +2,7 @@ Official Symfony Best Practices
 ===============================
 
 .. toctree::
+    :hidden:
 
     introduction
     creating-the-project
@@ -14,3 +15,5 @@ Official Symfony Best Practices
     security
     web-assets
     tests
+
+.. include:: /best_practices/map.rst.inc

best_practices/map.rst.inc

@@ -0,0 +1,11 @@
+* :doc:`/best_practices/introduction`
+* :doc:`/best_practices/creating-the-project`
+* :doc:`/best_practices/configuration`
+* :doc:`/best_practices/business-logic`
+* :doc:`/best_practices/controllers`
+* :doc:`/best_practices/templates`
+* :doc:`/best_practices/forms`
+* :doc:`/best_practices/i18n`
+* :doc:`/best_practices/security`
+* :doc:`/best_practices/web-assets`
+* :doc:`/best_practices/tests`