remove unnecessary whitespace if there's no Continue Reading button

templates/index.html

@@ -39,8 +39,8 @@
         <img src="{{ article.featured_image }}">
       {% endif %}
       {{ article.summary }}
-      <br>
       {% if article.content != article.summary %}
+        <br>
         <a class="btn" href="{{ SITEURL }}/{{ article.url }}{% if not DISABLE_URL_HASH %}#{{ article.slug }}{% endif %}">{{ _('Continue reading') }}</a>
       {% endif %}
     {% else %}