[Sync EN] strtr.xml Fix the confusing example, CS (#5754)

[github-actions]

Commit: https://github.com/php/doc-en/commit/1ed119182ad4629064b13301d0e427de47736bfe
PR: https://github.com/php/doc-en/pull/5754

Fichiers FR à mettre à jour

• reference/strings/functions/strtr.xml