Update blog-post.html

Author: johnzhou721

templates/blog-post.html

@@ -16,7 +16,7 @@ <h1>{{ this.title }}</h1>
         {% else %}
         {{ this.author }}
         {% endif %}
-        {{ "on"|trans }} {{ this.pub_date.strftime('%Y/%m/%d')}}
+        {{ "on"|trans }} {{ this.pub_date.strftime('%Y/%m/%d')}} {{ "post_posted_date"|trans }}
     </p>
   </div>
 </div>