Update paper.html

Author: mkstadler

_includes/bibere/paper.html

@@ -48,7 +48,7 @@
             {%- endif -%}.
         </span>
         <!-- Year -->
-        <span class="year">{{ paper.year }}</span>
+        <span class="year">{{ paper.year }}.</span>
         <!-- Tag -->
         <span class="tag_{{ paper.type }} tag label label-default">{{ paper.type }}</span>
         {%- for tag in paper.extraTags -%}