Comment 18 for bug 1829479

Reviewed: https://review.opendev.org/696582
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=6c704cc1c5648947b7a9b1ccbfd8037caa436766
Submitter: Zuul
Branch: master

commit 6c704cc1c5648947b7a9b1ccbfd8037caa436766
Author: Matt Riedemann <email address hidden>
Date: Thu Nov 28 09:18:21 2019 -0500

    Add resource provider allocation unset example to troubleshooting doc

    Now that the openstack resource provider allocation unset command is
    available [1] this change adds a note about using it in the troubleshooting
    doc for cleaning up orphaned allocations.

    Sub-sections are used to try and separate the two non-heal_allocations
    solutions with the recommended solution first (using the new unset command).

    While in here I noticed a typo in the heal_allocations section as well and
    fixed it.

    [1] I627bfd1ff699d075028da6afafbe7fb9b2f13058

    Change-Id: I896bb68c4bdd35d051ef3e95e19bdeb472f9bc99
    Related-Bug: #1829479