docs(cyclebutton): setup for deprecation

[mdt2]

Description

Preparation for deprecating the cyclebutton component. Includes a small change to docs to recommend markdown syntax for links instead of html (since markdown automatically handles links, vs needing to add classes when using html)

How and where has this been tested?

Please tag yourself on the tests you've marked complete to confirm the tests have been run by someone other than the author.

Validation steps

Check that the steps for flagging a component as deprecated have been completed in this PR:

• There's a deprecation announcement for cyclebutton
• In storybook, cyclebutton is in the deprecated section
• In storybook, cyclebutton has a deprecated status (seen in the toolbar)
• VRTs on this PR do not include cyclebutton anymore (result of the parameter that disables chromatic)
• In the docs site, cyclebutton has a deprecation notice at the top (with a link that is dark mode compatible)

Regression testing

Validate:

1. The documentation pages for at least two other components are still loading, including:

• The pages render correctly, are accessible, and are responsive.

2. If components have been modified, VRTs have been run on this branch:

• VRTs have been run and looked at.
• Any VRT changes have been accepted (by reviewer and/or PR author), or there are no changes.

Screenshots

To-do list

• I have read the contribution guidelines.
• I have updated relevant storybook stories and templates.
• I have tested these changes in Windows High Contrast mode.
• If my change impacts other components, I have tested to make sure they don't break.
• If my change impacts documentation, I have updated the documentation accordingly.
• ✨ This pull request is ready to merge. ✨

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File metrics

Summary

Total size: 3.93 MB^*

🎉 No changes detected in any packages

* Size determined by adding together the size of the main file for all packages in the library.
* Results are not gzipped or minified.
* An ASCII character in UTF-8 is 8 bits or 1 byte.