title: Angular: "AppRoutingModule" gets ignored and routes don't work
body: <p>It's a simple issue, I guess, but I can't figure out where does it come from. My router simply doesnt't work!</p>
  
  <p>The NavBar:</p>
  
  <pre><code>&lt;ul class="navbar-nav ml-auto"&gt;
  
          &lt;li class="nav-item"&gt;
  &lt;a routerLink="admin" routerLinkActive="active"&gt;Admin&lt;/a&gt;
          &lt;/li&gt;
          &lt;li class="nav-item"&gt;
            &lt;a href="#contact" class="nav-link"&gt;Home&lt;/a&gt;
          &lt;/li&gt;
  
        &lt;/ul&gt;
  </code></pre>
  
  <p>The app.module:</p>
  
  <pre><code>import { AppRoutingModule } from './app-routing.module';
  import { RouterModule } from '@angular/router';
  
  
  
    @NgModule({
        declarations: [AppComponent, NavbarComponent, HomeComponent, AdminComponent],
        imports: [
          BrowserModule,
          BrowserAnimationsModule,
          FormsModule,
          AppRoutingModule,
          RouterModule,
        ], etc
  </code></pre>
  
  <p>App.routingModule</p>
  
  <pre><code>import { NgModule } from '@angular/core';
  import { Routes, RouterModule } from '@angular/router';
  import { HomeComponent } from './components/home/home.component';
  import { AdminComponent } from './components/admin/admin.component';
  
  const routes: Routes = [
    {
      path: '**',
      component: HomeComponent
    },
    { path: 'admin', component: AdminComponent }
  ];
  @NgModule({
    imports: [RouterModule.forRoot(routes)],
    exports: [RouterModule]
  })
  export class AppRoutingModule {}
  </code></pre>
  
  <p>No mather what I type in the "a", the admin page wont appear. One hint I got from stackBlitz is that he doesnt consider my AppRoutingModule a module...Can someone help me out?</p>