docs: add missing @ngModule tags (#25734)

PR Close #25734

packages/common/src/directives/ng_component_outlet.ts

@@ -66,6 +66,7 @@ import {ComponentFactoryResolver, ComponentRef, Directive, Injector, Input, NgMo
  * {@example common/ngComponentOutlet/ts/module.ts region='NgModuleFactoryExample'}
  *
  * @experimental
+ * @ngModule CommonModule
  */
 @Directive({selector: '[ngComponentOutlet]'})
 export class NgComponentOutlet implements OnChanges, OnDestroy {

packages/common/src/directives/ng_for_of.ts

@@ -92,7 +92,7 @@ export class NgForOfContext<T> {
  * See a [live demo](http://plnkr.co/edit/KVuXxDp0qinGDyo307QW?p=preview) for a more detailed
  * example.
  *
- *
+ * @ngModule CommonModule
  */
 @Directive({selector: '[ngFor][ngForOf]'})
 export class NgForOf<T> implements DoCheck {

packages/common/src/directives/ng_if.ts

@@ -99,7 +99,7 @@ import {Directive, EmbeddedViewRef, Input, TemplateRef, ViewContainerRef, ɵstri
  * <ng-template #elseBlock>...</ng-template>
  * ```
  *
- *
+ * @ngModule CommonModule
  */
 @Directive({selector: '[ngIf]'})
 export class NgIf {