docs(aio): fix linting for universal

aio/content/examples/universal/src/app/app.server.module.ts

@@ -1,9 +1,9 @@
-import {NgModule} from '@angular/core';
-import {ServerModule} from '@angular/platform-server';
-import {ModuleMapLoaderModule} from '@nguniversal/module-map-ngfactory-loader';
+import { NgModule } from '@angular/core';
+import { ServerModule } from '@angular/platform-server';
+import { ModuleMapLoaderModule } from '@nguniversal/module-map-ngfactory-loader';
 
-import {AppModule} from './app.module';
-import {AppComponent} from './app.component';
+import { AppModule } from './app.module';
+import { AppComponent } from './app.component';
 
 @NgModule({
   imports: [

aio/content/examples/universal/src/app/hero.service.ts

@@ -119,7 +119,7 @@ export class HeroService {
 
       // Let the app keep running by returning an empty result.
       return of(result as T);
-    }
+    };
   }
 
   /** Log a HeroService message with the MessageService */

aio/content/examples/universal/src/app/heroes/heroes.component.spec.ts

@@ -22,4 +22,4 @@ describe('HeroesComponent', () => {
   it('should be created', () => {
     expect(component).toBeTruthy();
   });
-});
+});