Merge branch '4.0' into 4.1

* 4.0:
  Fixed a build problem in security.rst
  Fix composer usage for security-csrf

Author: xabbuh

security.rst

@@ -131,7 +131,7 @@ You'll learn later how to deny access to certain URLs or controllers.
 
 .. note::
 
-    If you do not see toolbar, make sure you installed the :doc:`profiler </profile>`
+    If you do not see toolbar, make sure you installed the :doc:`profiler </profiler>`
     using this command:
 
     .. code-block:: terminal

security/csrf.rst

@@ -16,7 +16,7 @@ Before using the CSRF protection, install it in your project:
 
 .. code-block:: terminal
 
-    $ composer require security-csrf
+    $ composer require symfony/security-csrf
 
 Then, enable/disable the CSRF protection with the ``csrf_protection`` option
 (see the :ref:`CSRF configuration reference <reference-framework-csrf-protection>`