[Sync EN] mysqli: A deprecation notice for mysqli_execute (#5595)

[github-actions]

Commit: https://github.com/php/doc-en/commit/d7a97693b4683a8c116ac4ba2e25731f5dcb8890
PR: https://github.com/php/doc-en/pull/5595

Zu aktualisierende DE-Dateien

• reference/mysqli/functions/mysqli-execute.xml