minor #9829 Update deployment.rst (raulconti, javiereguiluz)

This PR was merged into the 4.0 branch.

Discussion
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Update deployment.rst

bin/symfony_requirements script is no longer exists in Flex

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Commits
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3195870 Reword
5d4e6c9 Update deployment.rst

Author: javiereguiluz

deployment.rst

@@ -116,11 +116,8 @@ you'll need to do:
 A) Check Requirements
 ~~~~~~~~~~~~~~~~~~~~~
 
-Check if your server meets the requirements by running:
-
-.. code-block:: terminal
-
-    $ php bin/symfony_requirements
+Use the :doc:`Symfony Requirements Checker </reference/requirements>` to check
+if your server meets the technical requirements to run Symfony applications.
 
 .. _b-configure-your-app-config-parameters-yml-file: