[Sync EN] IntlChar::digit: fix example output (#5566)

[github-actions]

Commit: https://github.com/php/doc-en/commit/fe67f9ad47e7f04f50c4ec1366bdbcbd8ab940f2
PR: https://github.com/php/doc-en/pull/5566

Fichiers FR à mettre à jour

• reference/intl/intlchar/digit.xml