title: Template parse errors when use NgbCarousel with ngFor
body: <p>I want use ngb-carousel with ngFor,My code like this:
  <a href="https://i.stack.imgur.com/K4VgT.png" rel="nofollow noreferrer">code</a></p>
  
  <p>but this make some error like this:</p>
  
  <pre><code>&lt;ngb-carousel&gt;
    &lt;template  ngFor let-home [ngForOf]="homes | async" &gt;
      &lt;ngbSlide [home]="home"&gt;
        &lt;img src="{{item.thumb}}" alt="Random first slide"&gt;
      &lt;/ngbSlide&gt;
    &lt;/template&gt;
  &lt;/ngb-carousel&gt;
  </code></pre>
  
  <p>home.component.html?c8ce:1 Error: Template parse errors:(…)</p>
  
  <p>who can give me a example use ngb-carousel with ngFor?</p>