minor symfony#13966 [Console] Update input.rst (LiLinen)

This PR was merged into the 3.4 branch.

Discussion
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[Console] Update input.rst

Minor fix to bring logical consistency between arguments & options.

Commits
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85b7890 [Console] Update input.rst

Author: javiereguiluz

console/input.rst

@@ -104,7 +104,7 @@ There are three argument variants you can use:
     The argument can contain any number of values. For that reason, it must be
     used at the end of the argument list.
 
-You can combine ``IS_ARRAY`` with ``REQUIRED`` and ``OPTIONAL`` like this::
+You can combine ``IS_ARRAY`` with ``REQUIRED`` or ``OPTIONAL`` like this::
 
     $this
         // ...