Clarified note about WSGI support

doc/WHATSNEW.rst

@@ -80,7 +80,8 @@ deployment model will over time become the default and the old ZServer
 implementation will be deprecated. There's no concrete timeline for this yet.
 
 NOTE: There's no setup documentation nor streamlined instance creation logic
-for a WSGI setup yet. This will be provided in a later alpha release.
+for a WSGI setup yet. You are expected to know exactly what you are doing if
+you are trying to use this feature.
 
 
 Zope Toolkit