Remove link

Author: Nyholm

components/intl.rst

@@ -350,7 +350,6 @@ Learn more
     /reference/forms/types/locale
     /reference/forms/types/timezone
 
-.. _intl extension: https://www.php.net/manual/en/book.intl.php
 .. _install the intl extension: https://www.php.net/manual/en/intl.setup.php
 .. _ICU library: http://site.icu-project.org/
 .. _`Unicode ISO 15924 Registry`: https://www.unicode.org/iso15924/iso15924-codes.html