minor #17447 Remove useless comma (ffouillet)

This PR was submitted for the 6.0 branch but it was merged into the 5.4 branch instead.

Discussion
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Remove useless comma

Removed an useless comma.

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Commits
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fbae2e4 Update security.rst

Author: xabbuh

security.rst

@@ -226,7 +226,7 @@ from the `MakerBundle`_:
         }
 
         /**
-         * Returning a salt is only needed, if you are not using a modern
+         * Returning a salt is only needed if you are not using a modern
          * hashing algorithm (e.g. bcrypt or sodium) in your security.yaml.
          *
          * @see UserInterface