[Bug] The documentation of the Pcntl\QosClass enum shows a broken synopisps

[stof]

Affected page

https://www.php.net/manual/en/enum.qosclass.php

Issue description

this documentation has several issues:

• it does not make it clear that this enum is not in the top-level namespace but in the Pcntl namespace
• cases are broken as they all have a Pcntl:: prefix that does not make any sense (and is invalid syntax in PHP)

Steps to reproduce

1. Go to https://www.php.net/manual/en/enum.qosclass.php

Suggested fix

Cases should be rendered without the broken prefix.
For the namespace, I would suggest rendered a namespace Pcntl; statement above the enum. This seems the sensible way to render a synopsis for a namespaced enum (or class)