[Sync EN] Closing issues before convertion. (#5704)

[github-actions]

Commit: https://github.com/php/doc-en/commit/75772fd985edd7dc6f94b067bd2ef3ab59511cb5
PR: https://github.com/php/doc-en/pull/5704

Zu aktualisierende DE-Dateien

• bookinfo.xml