message: add playground links to our examples
  Makes it easier for developers to discover the Playground and see the Examples in action.
diff: @@ -14,6 +14,8 @@ The [Fluid Draft.js](https://github.com/microsoft/FluidExamples/tree/main/draft-
  Fluid Framework to take an existing project and make it collaborative. This example also demonstrates
  how to build an app that supports real-time updates in a rich text editor.
  +Try out Draft.js in the [Playground](/playground/?path=/docs/react-demos-draft-js--demo).
  +
  ## Brainstorming
  ![A screenshot of brainstorming app](/images/brainstorm-example.png)
  @@ -23,6 +25,8 @@ shows how simple experiences become compelling when you make them collaborative.
  maps (Shared Maps) to update the state of sticky notes as well as keep track of who added which ideas and who
  voted for those ideas.
  +Try out Brainstorm in the [Playground](/playground/?path=/docs/react-demos-brainstorm--demo).
  +
  ## Sudoku
  <img src="/images/sudoku-example.png" alt="A screenshot of Sudoku" style="max-height: 400px; margin-left: auto;
  @@ -30,3 +34,5 @@ margin-right: auto;">
  The [Sudoku](https://github.com/microsoft/FluidExamples/tree/main/sudoku) example demonstrates how to build
  a collaborative game. This example includes key features like presence.
  +
  +Try out Sudoku in the [Playground](/playground/?path=/docs/react-demos-sudoku--demo).
  