[Sync EN] filesystem: Clean up fgetcsv example (#5769)

[github-actions]

Commit: https://github.com/php/doc-en/commit/9936f6b7df4f01883b41f60d06fb438e9bf7e667
PR: https://github.com/php/doc-en/pull/5769

Archivos ES a actualizar

• reference/filesystem/functions/fgetcsv.xml