[templates/publications] Fix access to posters

Author: anjos

templates/publications.html

@@ -18,7 +18,7 @@ <h3 id="{{ group.grouper }}">{{ group.grouper }}</h3>
             <summary>{{ item.html }}</summary>
 
             {% if item.pdf %}<br/><a href="{{ item.pdf }}" target="_blank"><span class="fa fa-file-pdf"></span> <b>Article</b></a>{% endif %}
-            {% if item.poster %}{% if item.pdf %}&nbsp;|&nbsp;{% endif %}<a href="{{ poster }}" target="_blank"><span class="fa fa-file-pdf" aria-hidden="true"></span> <b>Poster</b></a>{% endif %}
+            {% if item.poster %}{% if item.pdf %}&nbsp;|&nbsp;{% endif %}<a href="{{ item.poster }}" target="_blank"><span class="fa fa-file-pdf" aria-hidden="true"></span> <b>Poster</b></a>{% endif %}
 
             <br/>