message: docs(upgrade): fix detail regarding bootstrapping order
  Clarify that Angular should be bootstrapped before AngularJS.
  Closes angular/angular#23225
  PR Close
diff: @@ -72,7 +72,8 @@ import {NgAdapterInjector} from './util';
  * use camelCase.
  * c. However the template binding syntax will always use the Angular style, e.g. square
  * brackets (`[...]`) for property binding.
  - * 8. AngularJS is always bootstrapped first and owns the root component.
  + * 8. Angular is bootstrapped first; AngularJS is bootstrapped second. AngularJS always owns the
  + * root component of the application.
  * 9. The new application is running in an Angular zone, and therefore it no longer needs calls
  * to `$apply()`.
  *
  