404 on dev manual?

[Ken D'Ambrosio]

As per https://cloudstack.apache.org/api/apidocs-4.21/, the dev manual 
should be at https://docs.cloudstack.apache.org/en/latest/dev.html, but 
that throws a 404.  Any ideas on who to whine to?  Easy enough to google 
(it's here: 
https://docs.cloudstack.apache.org/en/latest/developersguide/), but the 
web page probably should reference it correctly.