The concept doc should only talk about v2.1 API. This pach corrects them.
Also use the current API response instead of the old one and correct some
old reference link.
blueprint complete-todo-in-api-concept-doc
Change-Id: I90b39959a6a13f37ec0c03cf6f86943eba6c47d1
Uses openstackdocstheme to match other content
Has a dependent change in project-config also so that
file will build to developer.openstack.org/compute
at https://review.openstack.org/#/c/231000/
Change-Id: Ic060a1e79e4b2f8695cb788ff4df018e0cfd3286
He Jie Xu