Add details to sidebar documentation

[Jeremy-Walton]

Why?

Remove responsive references and add javascript snippet for how to achieve

What Changed

• Remove responsive sidebar references
• Add javascript snippet for how to achieve

Sanity Check

• [ ] Have you updated any usage of changed tokens?
• Have you updated the docs with any component changes?
• [ ] Have you updated the dependency graph with any component changes?
• Have you run linters?
• Have you run prettier?
• Have you tried building the css?
• Have you tried building storybook?
• [ ] Do you need to update the package version?

Screenshots