frappe/webnotes/templates/includes/comment.html

<div class="comment-row">
	<div class="comment-title text-muted">
		<span itemprop="name" class="author">{{ comment.comment_by_fullname }}</span> / 
			<span itemprop="commentTime">{{ comment.creation|global_date_format }}</span>:
	</div>
	<p class="comment-content" itemprop="commentText" 
		style="margin-left: 20px;">{{ comment.comment|markdown }}</p>
	<hr>
</div>