minor #13855 Replaced orphan " and" at the end of the sentence by a dot (Levure)

This PR was squashed before being merged into the 4.4 branch.

Discussion
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Replaced orphan " and" at the end of the sentence by a dot

Commits
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f125a42 Replaced orphan " and" at the end of the sentence by a dot

Author: javiereguiluz

components/event_dispatcher.rst

@@ -336,7 +336,7 @@ Dispatch the Event
 The :method:`Symfony\\Component\\EventDispatcher\\EventDispatcher::dispatch`
 method notifies all listeners of the given event. It takes two arguments:
 the ``Event`` instance to pass to each listener of that event and the name
-of the event to dispatch and ::
+of the event to dispatch::
 
     use Acme\Store\Event\OrderPlacedEvent;
     use Acme\Store\Order;