Fix closing tag.

Author: exoego

_includes/headertop.html

@@ -16,13 +16,13 @@
     <meta property="og:type" content="{% if page.url == '/' %}website{% else %}article{% endif %}"/>
     <meta property="og:image" content="{{ site.url }}/resources/img/scala-spiral-3d-2-toned-down.png"/>
     <meta property="og:title" content="{% if page.title %}{{ page.title }}{% else %}{{site.title}}{% endif %}"/>
-    {% if page.description %}<meta property="og:description" content="{{ page.description }}"{% endif %}
+    {% if page.description %}<meta property="og:description" content="{{ page.description }}"/>{% endif %}
 
     <meta name="twitter:card" content="summary"/>
     <meta name="twitter:site" content="@scala_lang"/>
     <meta name="twitter:creator" content="@scala_lang"/>
     {% if page.title %}<meta property="twitter:title" content="{{ page.title }}"/>{% endif %}
-    {% if page.description %}<meta property="twitter:description" content="{{ page.description }}"{% endif %}
+    {% if page.description %}<meta property="twitter:description" content="{{ page.description }}"/>{% endif %}
 
     <link rel="icon" type="image/png" href="{{ site.baseurl }}/resources/favicon.ico">
     <link rel="shortcut icon" type="image/png" href="{{ site.baseurl }}/resources/favicon.ico">