Broken link at Baremetal Environment in TripleO

[Renich]

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: a link is broken
- [ ] 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 OFTC

-----------------------------------
Release: 3.0.0 on 2022-07-15 09:16:14
SHA: cb53901f45f4ea3b28a286157997577d3a5b52d0
Source: https://opendev.org/openstack/tripleo-docs/src/deploy-guide/source/environments/baremetal.rst
URL: https://docs.openstack.org/project-deploy-guide/tripleo-docs/latest/environments/baremetal.html

Description
===========
A link is broken. In the "Validations" section; where it reads: "validations_no_undercloud". There is a typo as well. It should read: "validations_on_undercloud" I think.

The link is: https://docs.openstack.org/project-deploy-guide/tripleo-docs/latest/environments/baremetal.html#validations