docs(aio): update migrated content from anguar.io

aio/content/examples/quickstart/src/app/app.component.ts

@@ -0,0 +1,8 @@
+// #docregion
+import { Component } from '@angular/core';
+
+@Component({
+  selector: 'my-app',
+  template: `<h1>Hello {{name}}</h1>`
+})
+export class AppComponent { name = 'Angular'; }

aio/content/examples/quickstart/src/app/app.module.ts

@@ -0,0 +1,11 @@
+// #docregion
+import { NgModule }      from '@angular/core';
+import { BrowserModule } from '@angular/platform-browser';
+import { AppComponent }  from './app.component';
+
+@NgModule({
+  imports:      [ BrowserModule ],
+  declarations: [ AppComponent ],
+  bootstrap:    [ AppComponent ]
+})
+export class AppModule { }