Add fileExtension in format detail view

src/app/components/formats/detail/format-detail.component.html

@@ -19,6 +19,10 @@
               <span class="has-text-weight-bold">Type MapServer: </span>
               <span>{{format.mapServerType}}</span>
             </p>
+            <p>
+              <span class="has-text-weight-bold">Extension de fichier: </span>
+              <span>{{format.fileExtension}}</span>
+            </p>
           </div>
         </div>
       </div>