message: Use functional variables in documentation for LabelGroup
diff: @@ -9,7 +9,7 @@ The LabelGroup component is used to add commonly used margins and wrapping for g
  ```jsx live
  <LabelGroup>
  <Label>Default label</Label>
  - <Label bg='red.4'>Label with red background</Label>
  + <Label bg="prState.closed.bg">Label with red background</Label>
  <Label outline>Default outline label</Label>
  </LabelGroup>
  ```
  