Update event_dispatcher.rst

Co-authored-by: Oskar Stark <oskarstark@googlemail.com>

Author: Nyholm

event_dispatcher.rst

@@ -322,17 +322,16 @@ its name:
 
     $ php bin/console debug:event-dispatcher kernel.exception
 
-.. versionadded:: 5.3
 
-    You can also find listeners to event names partially matching a string. Example
-    to show all events and their listeners related to ``kernel``, your app or Security:
+to get everything matching "kernel" (i.e. ``kernel.exception``, ``kernel.response`` etc.) use:
+
+.. code-block:: terminal
 
-    .. code-block:: terminal
+    $ php bin/console debug:event-dispatcher kernel
 
-        $ php bin/console debug:event-dispatcher kernel
-        $ php bin/console debug:event-dispatcher App
-        $ php bin/console debug:event-dispatcher Security
+.. versionadded:: 5.3
 
+    The ability to match partial event names was introduced in Symfony 5.3.
 Learn more
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