Fix: border property for toggle

Description

• Trello card: https://trello.com/c/kAJvgBQe/1872-unwanted-inherited-border-in-toggle-switch

When demoing this today, the border property was missing from dev (http://eos-dev-room.herokuapp.com/form-elements/toggle). It is present in our codebase, which means it works correctly locally (http://localhost:3000/form-elements/toggle).

There may have been an issue with CI although I haven't been able to spot it. My hope is to open a PR and hope that this time the change goes through.

This PR just modifies a comment in the toggle component stylesheet.

How has this been tested?

http://localhost:3000/form-elements/toggle

I'm pretty sure the change will be there, but we want to merge this PR in the hope that it pushes the change this time.

Screenshots (if appropriate):