[Sync EN] Enhance the Yac extension documentation (#5810)

Commit: `https://github.com/php/doc-en/commit/d3a03f8f542cd083d793bbd8ef3d7756aae7711f`
PR: `https://github.com/php/doc-en/pull/5810`

**Archivos ES a actualizar**
- `reference/yac/book.xml`
- `reference/yac/setup.xml`
- `reference/yac/yac.xml`
- `reference/yac/yac/delete.xml`
- `reference/yac/yac/dump.xml`

