minor #13196 Fixed wording of "#13188" (HeahDude)

This PR was merged into the 3.4 branch.

Discussion
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Fixed wording of "#13188"

Commits
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6db8f75 Fixed wording of "#13188"

Author: HeahDude

security.rst

@@ -459,7 +459,7 @@ but in a second, you'll change this to use ``bcrypt``.
 .. caution::
 
     When using a ``memory`` provider and the :class:`Symfony\\Component\\Security\\Core\\User\\User`,
-    you have to choose an encoding without salt (i.e. ``bcrypt``).
+    class you have to choose an encoding without salt (i.e. ``bcrypt``).
 
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