minor #8346 Update choice_attr.rst.inc (flip111)

This PR was merged into the 2.7 branch.

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Update choice_attr.rst.inc

symfony/symfony#24088

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2691504 Update choice_attr.rst.inc

Author: javiereguiluz

reference/forms/types/options/choice_attr.rst.inc

@@ -6,8 +6,9 @@ choice_attr
 
 **type**: ``array``, ``callable`` or ``string`` **default**: ``array()``
 
-Use this to add additional HTML attributes to each choice. This can be an array
-of attributes (if they are the same for each choice), a callable or a property path
+Use this to add additional HTML attributes to each choice. This can be
+an associative array where the keys match the choice keys and the values
+are the options for each choice, a callable or a property path
 (just like `choice_label`_).
 
 If an array, the keys of the ``choices`` array must be used as keys::