message: docs: correct unclear heading
  Change `Close Modal on Overlay Click` to `Prevent Modal from closing on Overlay click`
diff: @@ -209,7 +209,7 @@ function InitialFocus() {
  }
  ```
  -### Close Modal on Overlay Click
  +### Prevent Modal from closing on Overlay click
  By default, the modal closes when you click it's overlay. You can set
  `closeOnOverlayClick` to `false` if you want the modal to stay visible.
  