[Sync EN] ext/ldap: Fix ldap_count_entries() return value documentation (#5218)

[github-actions]

Commit: https://github.com/php/doc-en/commit/cf27955fcbad1b75678cd6bb12bfdfa1e2005b63
PR: https://github.com/php/doc-en/pull/5218

Zu aktualisierende DE-Dateien

• reference/ldap/functions/ldap-count-entries.xml