Fix

Author: javiereguiluz

reference/constraints/Timezone.rst

@@ -111,8 +111,8 @@ This constraint considers valid both the `PHP timezone identifiers`_ and the
 
 However, the timezones provided by the Intl component can be different from the
 timezones provided by PHP's Intl extension (because they use different ICU
-versions). If this option is set to ``true``, this constraint also considers
-valid any value for PHPs ``\IntlTimeZone::createTimeZone()`` method.
+versions). If this option is set to ``true``, this constraint only considers
+valid the values created with the PHP ``\IntlTimeZone::createTimeZone()`` method.
 
 message
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