[Sync EN] Fix unresolved exception ZMQ entity references

PR: `https://github.com/php/doc-en/pull/5776` (2026-08-23)

**Файлы RU для обновления**
- `reference/zmq/book.xml`
- `reference/zmq/zmqcontextexception.xml`
- `reference/zmq/zmqdeviceexception.xml`
- `reference/zmq/zmqexception.xml`
- `reference/zmq/zmqpollexception.xml`
- `reference/zmq/zmqsocketexception.xml`

