discourse-custom-wizard/assets/javascripts/discourse/templates/components/wizard-message.hbs

<div class="message-block primary">
  {{#if showIcon}}
    {{d-icon icon}}
  {{/if}}
  <span class="message-content">{{{message}}}</span>
  {{#if hasItems}}
    <ul>
      {{#each items as |item|}}
        <li>
          <span>{{d-icon item.icon}}</span>
          <span>{{{item.html}}}</span>
        </li>
      {{/each}}
    </ul>
  {{/if}}
</div>

{{#if showDocumentation}}
  <div class="message-block">
    {{d-icon 'question-circle'}}
        
    <a href={{url}} target="_blank">
      {{documentation}}
    </a>
  </div>
{{/if}}