chore: replace word throw by dispatch for event

Author: 94noni

components/event_dispatcher.rst

@@ -28,7 +28,7 @@ truly extensible.
 Take an example from :doc:`the HttpKernel component </components/http_kernel>`.
 Once a ``Response`` object has been created, it may be useful to allow other
 elements in the system to modify it (e.g. add some cache headers) before
-it's actually used. To make this possible, the Symfony kernel throws an
+it's actually used. To make this possible, the Symfony kernel dispatches an
 event - ``kernel.response``. Here's how it works:
 
 * A *listener* (PHP object) tells a central *dispatcher* object that it