minor #5792 [Cookbook][EventDispatcher] fix build (xabbuh)

This PR was merged into the 2.7 branch.

Discussion
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[Cookbook][EventDispatcher] fix build

Commits
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7ef7ba7 fix build

Author: xabbuh

cookbook/event_dispatcher/event_listener.rst

@@ -255,6 +255,12 @@ Listeners and subscribers can be used in the same application indistinctly. The
 decision to use either of them is usually a matter of personal taste. However,
 there are some minor advantages for each of them:
 
+* **Subscribers are easier to reuse** because the knowledge of the events is kept
+  in the class rather than in the service definition. This is the reason why
+  Symfony uses subscribers internally;
+* **Listeners are more flexible** because bundles can enable or disable each of
+  them conditionally depending on some configuration value.
+
 Debugging Event Listeners
 -------------------------
 
@@ -274,9 +280,3 @@ its name:
 .. code-block:: bash
 
     $ php app/console debug:event-dispatcher kernel.exception
-=======
-* **Subscribers are easier to reuse** because the knowledge of the events is kept
-  in the class rather than in the service definition. This is the reason why
-  Symfony uses subscribers internally;
-* **Listeners are more flexible** because bundles can enable or disable each of
-  them conditionally depending on some configuration value.

reference/constraints/IsFalse.rst

@@ -11,7 +11,7 @@ Also see :doc:`IsTrue <IsTrue>`.
 | Applies to     | :ref:`property or method <validation-property-target>`                |
 +----------------+-----------------------------------------------------------------------+
 | Options        | - `message`_                                                          |
-|                | - `payload`_                                                        |
+|                | - `payload`_                                                          |
 +----------------+-----------------------------------------------------------------------+
 | Class          | :class:`Symfony\\Component\\Validator\\Constraints\\IsFalse`          |
 +----------------+-----------------------------------------------------------------------+

reference/constraints/IsNull.rst

@@ -11,7 +11,7 @@ Also see :doc:`NotNull <NotNull>`.
 | Applies to     | :ref:`property or method <validation-property-target>`                |
 +----------------+-----------------------------------------------------------------------+
 | Options        | - `message`_                                                          |
-|                | - `payload`_                                                        |
+|                | - `payload`_                                                          |
 +----------------+-----------------------------------------------------------------------+
 | Class          | :class:`Symfony\\Component\\Validator\\Constraints\\IsNull`           |
 +----------------+-----------------------------------------------------------------------+