minor #20677 [Console] Fix argument position for addOption (super-omario)

This PR was squashed before being merged into the 6.4 branch.

Discussion
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[Console] Fix argument position for addOption

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a78f065 [Console] Fix argument position for addOption

Author: javiereguiluz

console/input.rst

@@ -320,7 +320,7 @@ can also implement value completion for the input in your commands. For
 instance, you may want to complete all usernames from the database in the
 ``name`` argument of your greet command.
 
-To achieve this, use the 5th argument of ``addArgument()``/``addOption``::
+To achieve this, use the 5th argument of ``addArgument()`` or the 6th argument of ``addOption``::
 
     // ...
     use Symfony\Component\Console\Completion\CompletionInput;