message: docs: update overlay docs
diff: @@ -77,3 +77,4 @@ render(<Demo />)
  | onEscape | `function` | `undefined` | Required. Function to call when user presses `Escape`. Typically this function sets the `Overlay` visibility state to `false`. |
  | width | `'sm', 'md', 'lg', 'xl', 'auto'` | `auto` | Sets the width of the `Overlay`, pick from our set list of widths, or pass `auto` to automatically set the width based on the content of the `Overlay`. `sm` corresponds to `256px`, `md` corresponds to `320px`, `lg` corresponds to `480px`, and `xl` corresponds to `640px`. |
  | height | `'sm', 'md', 'auto'` | `auto` | Sets the height of the `Overlay`, pick from our set list of heights, or pass `auto` to automatically set the height based on the content of the `Overlay`. `sm` corresponds to `480px` and `md` corresponds to `640px`. |
  +| visibility | `'visible', 'hidden'` | `visible` | Sets the visibility of the `Overlay`. |
  