[Sync EN] Fix reference to non-existent "example three" (#5724)

[github-actions]

Commit: https://github.com/php/doc-en/commit/fa67e21421448a20fe701a20897c30f93072e64b
PR: https://github.com/php/doc-en/pull/5724

Zu aktualisierende DE-Dateien

• language/basic-syntax.xml