Update show.html.erb

Author: lmrodriguezr

app/views/publications/show.html.erb

@@ -11,7 +11,7 @@
     <%= @publication.publication_authors.size == 1 ? 'Author' : 'Authors' %>
   </dt>
   <dd>
-    <% @publication.publication_authors.each_with_key do |p_author, k| %>
+    <% @publication.publication_authors.each_with_index do |p_author, k| %>
       <% author = p_author.author %>
       <%= '; ' if k > 0 %>
       <%= link_to author.full_name, author %>