message: re-pointing live demo links to demo.backstage.io
diff: @@ -43,13 +43,13 @@ this.
  The UI is a thin, client-side wrapper around a set of plugins. It provides some
  core UI components and libraries for shared activities such as config
  -management. [[live demo](https://backstage-demo.roadie.io/)]
  +management. [[live demo](https://demo.backstage.io/catalog)]
  ![UI with different components highlighted](../assets/architecture-overview/core-vs-plugin-components-highlighted.png)
  Each plugin typically makes itself available in the UI on a dedicated URL. For
  example, the Lighthouse plugin is registered with the UI on `/lighthouse`.
  -[[live demo](https://backstage-demo.roadie.io/lighthouse)]
  +[[learn more](https://backstage.io/blog/2020/04/06/lighthouse-plugin)]
  ![The lighthouse plugin UI](../assets/architecture-overview/lighthouse-plugin.png)
  @@ -116,7 +116,7 @@ Architecturally, plugins can take three forms:
  #### Standalone plugins
  Standalone plugins run entirely in the browser.
  -[The Tech Radar plugin](https://backstage-demo.roadie.io/tech-radar), for
  +[The Tech Radar plugin](https://demo.backstage.io/tech-radar), for
  example, simply renders hard-coded information. It doesn't make any API requests
  to other services.
  