title: angular formly - How to apply the custom css on dynamic label in angular formly?
body: <p>How to apply the custom css on dynamic label in angular formly?</p>
  
  <p>For one of our formly modal, I am creating dynamic label as below.</p>
  
  <pre><code>   formlyConfig.templateOptions.wrapperLabel = 'Is '+ emailAddress + ' the best email?';
  
         emailAddress - populated by service.
  </code></pre>
  
  <p>would like to display this on UI as - Is <strong>abc@abc.com</strong> the best email?</p>