Devfile 2.2.0-alpha API reference doc is broken

[elsony]

/area documentation

Which area this documentation change is related to?
API reference doc for 2.2.0-alpha

Issue details

What mistake did you find / what is missing in the documentation?
When I try to see the API reference in the doc for 2.2.0-alpha, the current doc does not show the API reference doc properly.
https://devfile.io/docs/devfile/2.2.0/user-guide/api-reference.html
/area API

It is expect to show the latest reference doc from the main stream.

[elsony]

This is a dup of #695