talk/plugins/talk-plugin-notifications/server/emails/notification.html.ejs

<p><%= linkify(body, {nl2br: true}) %></p>
<p><%= t('talk-plugin-notifications.templates.footer', organizationName) %></p>
<p><a href="<%= BASE_URL %>account/unsubscribe-notifications#<%= unsubscribeToken %>" target="_blank"><%= t('talk-plugin-notifications.templates.links.unsubscribe') %></a></p>