CASMTRIAGE-8220: remove broken doc link

[bo-quan]

Summary and Scope

Remove broken doc link.

Issues and Related PRs

List and characterize relationship to Jira/Github issues and other pull requests. Be sure to list dependencies.

• Resolves CASMTRIAGE-8220

Testing

List the environments in which these changes were tested.

Tested on:

• <development system>
• Local development environment
• Virtual Shasta

Test description:

How were the changes tested and success verified? If schema changes were part of this change, how were those handled in your upgrade/downgrade testing?

• Were the install/upgrade-based validation checks/tests run (goss tests/install-validation doc)?
• Were continuous integration tests run? If not, why?
• Was upgrade tested? If not, why?
• Was downgrade tested? If not, why?
• Were new tests (or test issues/Jiras) created for this change?

Risks and Mitigations

Low.

Pull Request Checklist

• Version number(s) incremented, if applicable
• Copyrights updated
• License file intact
• Target branch correct
• Testing is appropriate and complete, if applicable
• Release Notes in docs-csm updated, if applicable