Update README.md (#389)

Author: vladmoroz

README.md

@@ -1,3 +1 @@
-Design system maintained and used by [WorkOS](https://workos.com).
-
-Built with [Stitches](https://github.com/stitchesjs/stitches) and [Radix UI Primitives](https://radix-ui.com/primitives/docs/overview/introduction).
+Design system that was used by [Modulz](https://modulz.app/). It’s now archived and superceded by [Radix Themes](https://github.com/radix-ui/themes).