chore(forms): update forms labels (#10873)

modules/@angular/forms/src/form_providers.ts

@@ -16,19 +16,19 @@ import {FormBuilder} from './form_builder';
 
 /**
  * Shorthand set of providers used for building Angular forms.
- * @experimental
+ * @stable
  */
 export const FORM_PROVIDERS: Type<any>[] = [RadioControlRegistry];
 
 /**
  * Shorthand set of providers used for building reactive Angular forms.
- * @experimental
+ * @stable
  */
 export const REACTIVE_FORM_PROVIDERS: Type<any>[] = [FormBuilder, RadioControlRegistry];
 
 /**
  * The ng module for forms.
- * @experimental
+ * @stable
  */
 @NgModule({
   declarations: TEMPLATE_DRIVEN_DIRECTIVES,
@@ -40,7 +40,7 @@ export class FormsModule {
 
 /**
  * The ng module for reactive forms.
- * @experimental
+ * @stable
  */
 @NgModule({
   declarations: [REACTIVE_DRIVEN_DIRECTIVES],
@@ -48,4 +48,4 @@ export class FormsModule {
   exports: [InternalFormsSharedModule, REACTIVE_DRIVEN_DIRECTIVES]
 })
 export class ReactiveFormsModule {
-}
+}