minor #10913 Clarify a sentence (makmaoui)

This PR was submitted for the 4.2 branch but it was merged into the 3.4 branch instead (closes #10913).

Discussion
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Clarify a sentence

On the front view there is not difference between the two listeners (http-kernel and security)

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Commits
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f84a295 Clarify a sentence

Author: javiereguiluz

components/http_kernel.rst

@@ -599,7 +599,7 @@ below for more details).
     **ExceptionListener in Security**
 
     The other important listener is the
-    :class:`Symfony\\Component\\Security\\Http\\Firewall\\ExceptionListener`.
+    :class:`Symfony\\Component\\Security\\Http\\Firewall\\ExceptionListener` comes from the Security component.
     The goal of this listener is to handle security exceptions and, when
     appropriate, *help* the user to authenticate (e.g. redirect to the login
     page).