Main landing page references old appendices

[Billy Olsen]

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:

  The docs have been refactored to do away with most appendices yet the index/welcome page still references a "wealth of information in the form of appendices"

- [ ] This is a doc addition request.
- [ ] I have a fix to the document that I can paste below including example: input and output.

If you have a troubleshooting or support issue, use the following resources:

 - The mailing list: https://lists.openstack.org
 - IRC: 'openstack' channel on Freenode

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Release: 0.0.1.dev261 on 2021-01-11 15:13:37
SHA: abc4e1c97a5a95397f25e36337eabc1710baa255
Source: https://opendev.org/openstack/charm-deployment-guide/src/deploy-guide/source/index.rst
URL: https://docs.openstack.org/project-deploy-guide/charm-deployment-guide/latest/index.html

[Peter Matulis (petermatulis)]

This pending PR resolves the issue:

https://review.opendev.org/c/openstack/charm-deployment-guide/+/769987

[Peter Matulis (petermatulis)]

This was closed via PR in comment #1.