* Update api doc config
Duck no longer lives in github.com/knative, and networking package has
been introduced. Also fill in a couple other packages to remove warnings
when run
* Regenerate api references
Generated with https://github.com/ahmetb/gen-crd-api-reference-docs and
this patch includes the script to self-serve this process. I hope to improve
this stuff in the future, for now it works fine.
Fixes#636.
Signed-off-by: Ahmet Alp Balkan <ahmetb@google.com>