refactor: change provide(...) for {provide: ...}

- provide() is deprecated,
- {} syntax is required by the offline compiler

modules/@angular/http/src/base_request_options.ts

@@ -133,7 +133,7 @@ export class RequestOptions {
  *   search: string = 'coreTeam=true';
  * }
  *
- * bootstrap(App, [HTTP_PROVIDERS, provide(RequestOptions, {useClass: MyOptions})]);
+ * bootstrap(App, [HTTP_PROVIDERS, {provide: RequestOptions, useClass: MyOptions}]);
  * ```
  *
  * The options could also be extended when manually creating a {@link Request}