Horizon doc job fails with sphinx 4.4.0 version

[Vishal Manchanda]

After openstack/requirements bump the Sphinx version to 4.4.0 from 4.3.2 by [1].
horizon doc job starts failing with error [2]. I think it is a new feature added
in sphinx version 4.4.0 https://github.com/sphinx-doc/sphinx/pull/9800 which
causes the failure.

[1] https://review.opendev.org/c/openstack/requirements/+/825031
[2] https://paste.opendev.org/show/812198/

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.opendev.org/c/openstack/horizon/+/825315

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.opendev.org/c/openstack/horizon/+/825386

[OpenStack Infra (hudson-openstack)]

Change abandoned by "Vishal Manchanda <email address hidden>" on branch: master
Review: https://review.opendev.org/c/openstack/horizon/+/825315
Reason: Duplicate of https://review.opendev.org/c/openstack/horizon/+/825386, pushed new patch by mistake rather than updating it.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.opendev.org/c/openstack/horizon/+/825393

[OpenStack Infra (hudson-openstack)]

Change abandoned by "Vishal Manchanda <email address hidden>" on branch: master
Review: https://review.opendev.org/c/openstack/horizon/+/825386
Reason: duplicate

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/c/openstack/horizon/+/825393
Committed: https://opendev.org/openstack/horizon/commit/83f864f490d9e7dbbc90bf14893c364de9311349
Submitter: "Zuul (22348)"
Branch: master

commit 83f864f490d9e7dbbc90bf14893c364de9311349
Author: manchandavishal <email address hidden>
Date: Wed Jan 19 19:50:48 2022 +0530

    Fix hardcoded link error in sphinx 4.4.0

    horizon doc job is failing because sphinx 4.4.0 raise an error
    for the hardcoded extlinks link [1]. This patch fixes those links
    to unblock the doc gate job.

    Closes-Bug: #1958290
    Co-Authored-By: Akihiro Motoki <email address hidden>

    [1] https://github.com/sphinx-doc/sphinx/pull/9800

    Change-Id: Ica1a16522421a697efdab882afe6d9c08ff05e0b

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/horizon 21.0.0 release.