discourse-adplugin/assets/javascripts/discourse/templates/components/codefund/post-bottom.hbs

<span class="codefund-wrapper codefund-post-bottom">
  <a href="{{adDetails.campaignUrl}}" class="codefund-text" target="_blank" rel="noopener">
    {{#if siteSettings.codefund_display_advertiser_labels}}
      <span class="codefund-label">{{siteSettings.codefund_advertiser_short_label}}</span>
    {{/if}}
    <strong>{{adDetails.headline}}</strong> {{adDetails.body}}
  </a>
  <img src="{{adDetails.impressionUrl}}" class="codefund-pixel">
</span>