change backend endpoint

front/index.html

@@ -80,7 +80,7 @@
 									<td>
 										<ul>
 											<li ng-repeat="o in l.OUT">
-												<a ng-href="/backend/{{o}}" target="_blank">{{clean(o)}}  &#8675;</a>
+												<a ng-href="/books/{{o}}" target="_blank">{{clean(o)}}  &#8675;</a>
 											</li>
 										</ul>
 									</td>