fix: remove extra ticks from email template

<p class="text">Your account is all set up and ready to go.</p>

<p class="text"><b>Here's how to get started:</b></p>

<ul class="list">

    <li>Log in at: <a href=`{{homepage}}`>{{homepage}}</a></li>

    <li>Log in at: <a href={{homepage}}>{{homepage}}</a></li>

    <li>Username: {{email}}</li>

    <li>Password: <code class="text">{{password}}</code></li>

</ul>