fix(news): change updated date display to created date

src/app/post/components/post-details/post-details.component.html

@@ -21,7 +21,7 @@
       <div fxLayout="column" class="informations">
         <div>{{ post.author }}</div>
         <div>
-          {{ post.updated_at | date: 'dd MMM y' }}
+          {{ post.created_at | date: 'dd MMM y' }}
         </div>
       </div>
     </div>