[Sync EN] predefined/error: getPrevious example uses real Error subclass (TypeError) (#5656)

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Commit: https://github.com/php/doc-en/commit/e565d17dc87b0c5946ea603fbcfb1777316fb6fc
PR: https://github.com/php/doc-en/pull/5656

Zu aktualisierende DE-Dateien

• language/predefined/error/getprevious.xml