BOUYGE

Documentation section bloc Extensions for writers is empty

2

- [x] I was not able to find an [open](https://github.com/zendframework/zend-feed/issues?q=is%3Aopen) or [closed](https://github.com/zendframework/zend-feed/issues?q=is%3Aclosed) issue matching what I'm seeing. - [x] This is not a question. (Questions should be asked on [slack](https://zendframework.slack.com/)...