templates: ensure bold blocks are always closed.

templates/link.html

@@ -36,6 +36,7 @@ $for comment in comments:
     <li>
     <div class="comment" id="comment_$comment.commentID">
     $:comment.content
+    </b></i>
     <footer>
     $ user = comment.user
     posted <a href="$here#comment_$comment.commentID">$comment.ago()</a> ago