WildFly Model reference is generated with wildscribe.

The stability field that has been added to WildFly is not properly generated at the moment (tracked by https://github.com/wildscribe/wildscribe/issues/53).

Once the wildscribe Maven plugin will have been updated, the docs/pom.xml would have to be updated to start the standalone server at the `experimental` stability level to provide an exhaustive model reference that includes all resources with their corresponding levels.