message: docs(forms): fix FormArray description
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diff: @@ -1102,8 +1102,8 @@ export class FormGroup extends AbstractControl {
  }
  /**
  - * @whatItDoes Tracks the value and validity state of an array of {@link FormControl}
  - * instances.
  + * @whatItDoes Tracks the value and validity state of an array of {@link FormControl},
  + * {@link FormGroup} or {@link FormArray} instances.
  *
  * A `FormArray` aggregates the values of each child {@link FormControl} into an array.
  * It calculates its status by reducing the statuses of its children. For example, if one of
  