Merge branch '6.0' into 6.1

* 6.0:
  Clarify VALUE_IS_ARRAY usage

Author: javiereguiluz

console/input.rst

@@ -221,7 +221,7 @@ There are five option variants you can use:
     Accept either the flag (e.g. ``--yell``) or its negation (e.g.
     ``--no-yell``).
 
-You can combine ``VALUE_IS_ARRAY`` with ``VALUE_REQUIRED`` or
+You need to combine ``VALUE_IS_ARRAY`` with ``VALUE_REQUIRED`` or
 ``VALUE_OPTIONAL`` like this::
 
     $this