[Sync EN] Revise the Taint extension documentation (#5802)

[github-actions]

Commit: https://github.com/php/doc-en/commit/befe2b9fbe37b0925498f336632742651386b151
PR: https://github.com/php/doc-en/pull/5802

Archivos ES a actualizar

• reference/taint/book.xml
• reference/taint/configure.xml
• reference/taint/detail.xml
• reference/taint/functions/is-tainted.xml
• reference/taint/functions/taint.xml
• reference/taint/functions/untaint.xml
• reference/taint/ini.xml
• reference/taint/reference.xml
• reference/taint/setup.xml