title: Tooltip: ngbTooltip doesn't accept a new line
body: <p>I want to add a line break inside my tool tip but it's not working, i tried everything from <code>\n</code>, <code>&lt;br&gt;</code>, <code>&amp;013;/ &amp;#13</code></p>
  
  <p>Here is my code:</p>
  
  <pre><code>&lt;a&gt;
   &lt;img class="rounded-circle d-inline-block" src="{{content.image}}"  
   triggers="click" [autoClose]="true" ngbTooltip="{{content.email}} &lt;br&gt; 
   {{content.tel}}"&gt;
  &lt;/a&gt;
  </code></pre>