message: docs(combineLatest) Use project function instead of map operator
  * Use project function instead of map
  "Use project function to dynamically calculate the Body-Mass Index" example in the combineLatest documentations was using "map" operator instead of project function
  * docs(combineLatest): Remove documentations for deprecated project function
diff: @@ -145,13 +145,6 @@ export function combineLatest<R>(...observables: Array<ObservableInput<any> | ((
  * emitted value. On the other hand, if any Observable errors, `combineLatest`
  * will error immediately as well, and all other Observables will be unsubscribed.
  *
  - * `combineLatest` accepts as optional parameter `project` function, which takes
  - * as arguments all values that would normally be emitted by resulting Observable.
  - * `project` can return any kind of value, which will be then emitted by Observable
  - * instead of default array. Note that `project` does not take as argument that array
  - * of values, but values themselves. That means default `project` can be imagined
  - * as function that takes all its arguments and puts them into an array.
  - *
  * ## Examples
  * ### Combine two timer Observables
  * ```ts
  @@ -189,7 +182,7 @@ export function combineLatest<R>(...observables: Array<ObservableInput<any> | ((
  * ```
  *
  *
  - * ### Use project function to dynamically calculate the Body-Mass Index
  + * ### Use map operator to dynamically calculate the Body-Mass Index
  * ```ts
  * import { combineLatest, of } from 'rxjs';
  * import { map } from 'rxjs/operators';
  @@ -197,7 +190,7 @@ export function combineLatest<R>(...observables: Array<ObservableInput<any> | ((
  * const weight = of(70, 72, 76, 79, 75);
  * const height = of(1.76, 1.77, 1.78);
  * const bmi = combineLatest(weight, height).pipe(
  - * map(([w, h]) => w / (h * h)),
  + * map(([w, h]) => w / (h * h))),
  * );
  * bmi.subscribe(x => console.log('BMI is ' + x));
  *
  