docs: convert all @experimental tags to @publicApi tags (#26595)

PR Close #26595

packages/forms/src/directives/validators.ts

@@ -17,7 +17,7 @@ import {NG_VALIDATORS, Validators} from '../validators';
  * @description
  * Defines the map of errors returned from failed validation checks
  *
- * @experimental
+ * @publicApi
  */
 export type ValidationErrors = {
   [key: string]: any
@@ -93,7 +93,7 @@ export interface Validator {
  * }
  * ```
  *
- * @experimental
+ * @publicApi
  */
 export interface AsyncValidator extends Validator {
   /**
@@ -175,7 +175,7 @@ export class RequiredValidator implements Validator {
  * <input type="checkbox" name="active" ngModel required>
  * ```
  *
- * @experimental
+ * @publicApi
  * @ngModule FormsModule
  * @ngModule ReactiveFormsModule
  */
@@ -213,7 +213,7 @@ export const EMAIL_VALIDATOR: any = {
  * <input type="email" name="email" ngModel [email]="true">
  * ```
  *
- * @experimental
+ * @publicApi
  * @ngModule FormsModule
  * @ngModule ReactiveFormsModule
  */