Fix remaining api-ref references

Change Ib1a25cc31b6802655f576711dab38ddfcb73bbdb missed a couple of
URLs, fix these:

The api documentation is now published on docs.openstack.org instead
of developer.openstack.org. Update all links that are changed to the
new location.

Change-Id: I1656396df42502fe8e958bf8532161dfae6537e5
1 file changed