Remove unecessary comma spacing

templates/blog/author_media.html

@@ -20,10 +20,7 @@
     <div class="title is-5">
 {% for author in post.authors -%}
       <p class="is-inline">
-      {{ authors_data[author].display_name }}
-        {% if not loop.last %}
-        ,
-        {% endif %}
+      {{ authors_data[author].display_name }}{% if not loop.last %},{% endif %}
       </p>
 {% endfor %}
     </div>