Doc: Old link in Tacker Queens Specs

[Manpreet Kaur]

This bug tracker is for errors with the documentation, use the following as a template and remove or add fields as you see fit. Convert [ ] into [x] to check boxes:

- [x] This doc is inaccurate in this way: Reference URL for api-sample is old link present in Update VNFFG’s Chain and Classifier.
- [ ] This is a doc addition request.
- [ ] I have a fix to the document that I can paste below including example: input and output.

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-----------------------------------
Release: 0.0.1.dev163 on 2017-10-31 16:26:07
SHA: 41376b9c66ced0b45dc671b7d588f90a421cec23
Source: https://opendev.org/openstack/tacker-specs/src/doc/source/specs/queens/update-vnffg.rst
URL: https://specs.openstack.org/openstack/tacker-specs/specs/queens/update-vnffg.html

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.opendev.org/745624

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/745624
Committed: https://git.openstack.org/cgit/openstack/tacker-specs/commit/?id=eaa77af9c7af45f448f033588d906c411021af4f
Submitter: Zuul
Branch: master

commit eaa77af9c7af45f448f033588d906c411021af4f
Author: Manpreet Kaur <email address hidden>
Date: Tue Aug 11 06:04:59 2020 +0000

    Fix old link in Tacker Queens Spec

    The specification "Update VNFFG’s Chain and Classifier",
    refers to an old link [1] for networking-sfc api samples.
    The correct link is [2].
    [1] https://github.com/openstack/networking-sfc/tree/master/doc/api_samples
    [2] https://opendev.org/openstack/networking-sfc/src/branch/master/doc/api_samples

    Change-Id: I3358aff8dc7e95f855d6dc9c27b9e34b8c1d7f9c
    Closes-Bug: #1891010