[Sync EN] Revise the Yac extension documentation (#5794)

[github-actions]

Commit: https://github.com/php/doc-en/commit/1a42637cd40d0f75af1435ff051c7caa9b1c83e0
PR: https://github.com/php/doc-en/pull/5794

Archivos ES a actualizar

• reference/yac/book.xml
• reference/yac/ini.xml
• reference/yac/setup.xml
• reference/yac/yac/add.xml
• reference/yac/yac/construct.xml
• reference/yac/yac/delete.xml
• reference/yac/yac/dump.xml
• reference/yac/yac/flush.xml
• reference/yac/yac/get.xml
• reference/yac/yac/getter.xml
• reference/yac/yac/info.xml
• reference/yac/yac/set.xml
• reference/yac/yac/setter.xml