message: docs: update enableIvy link
  PR Close
diff: Ivy is a new backwards-compatible Angular renderer focused on further speed improvements, size reduction, and increased flexibility.
  -Ivy is currently not feature complete, but can be tested via [`enableIvy: true`](https://next.angular.io/guide/aot-compiler#enableivy) [`angularCompilerOptions` flag](https://next.angular.io/guide/aot-compiler#angular-compiler-options).
  +Ivy is currently not feature complete, but can be tested via [`enableIvy: true`](https://next.angular.io/guide/ivy#updating-an-existing-project-to-use-ivy) [`angularCompilerOptions` flag](https://next.angular.io/guide/aot-compiler#angular-compiler-options).
  We currently expect Ivy to remain behind the flag until it's feature complete and battle tested at Google. In the meantime you can check out this [Hello World demo](https://ng-ivy-demo.firebaseapp.com/).
  