Placement user doc: add link to API reference

[Eric Fried]

The Placement API user doc [1] says:

  API Reference
  A full API reference is forthcoming, but until then ...

That reference has since been published [2].

[1] https://docs.openstack.org/nova/pike/user/placement.html#api-reference
[2] https://developer.openstack.org/api-ref/placement/

[Eric Fried (efried)]

https://review.openstack.org/#/c/499635/

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/pike
Review: https://review.openstack.org/499748

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/499748
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=cdff10e94e3f1e4248537fe81b63835fbe84769b
Submitter: Jenkins
Branch: stable/pike

commit cdff10e94e3f1e4248537fe81b63835fbe84769b
Author: Eric Fried <email address hidden>
Date: Thu Aug 31 10:08:12 2017 -0500

    [placement] Update user doc with api-ref link

    The Placement API user guide [1] mentions a not-yet-available REST API
    reference which has since become available [2]; update with the link.

    [1] https://docs.openstack.org/nova/pike/user/placement.html#api-reference
    [2] https://developer.openstack.org/api-ref/placement/

    Closes-Bug: #1714284
    Change-Id: Ic368327aa4a81f4217aecb4af3d9358502676234
    (cherry picked from commit 4784909352dd1cbb21ba12ec39a863f1ad5ed746)

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/nova 16.0.1 release.

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/nova 17.0.0.0b1 development milestone.