Fix the defect that show :page where use custom route rules and the p…

…age=1

src/View/Helper/PaginatorHelper.php

@@ -435,7 +435,7 @@ public function generateUrl(array $options = [], $model = null, $full = false)
         $url = array_merge($url, $options);
 
         if (!empty($url['page']) && $url['page'] == 1) {
-            $url['page'] = null;
+            $url['page'] = false;
         }
         if (isset($paging['sortDefault'], $paging['directionDefault'], $url['sort'], $url['direction']) &&
             $url['sort'] === $paging['sortDefault'] &&