Make the advertise link work in the presence of routing, a=chris

diff --git a/src/controllers/SearchController.php b/src/controllers/SearchController.php
index 6b13201f8..50d530f7d 100755
--- a/src/controllers/SearchController.php
+++ b/src/controllers/SearchController.php
@@ -30,6 +30,7 @@
  */
 namespace seekquarry\yioop\controllers;

+use seekquarry\yioop as B;
 use seekquarry\yioop\configs as C;
 use seekquarry\yioop\library as L;
 use seekquarry\yioop\library\CrawlConstants;
@@ -802,7 +803,7 @@ class SearchController extends Controller implements CrawlConstants
                             $data['RELEVANT_ADVERTISEMENT']['DESCRIPTION'] =
                                 tl('search_controller_ad_keyword_description');
                             $data['RELEVANT_ADVERTISEMENT']['DESTINATION'] =
-                                C\BASE_URL . "advertise.php";
+                                B\directUrl("advertise");
                         } else {
                             $advertisement_model->addImpression(
                                 $data['RELEVANT_ADVERTISEMENT']['ID']);