Fix data filler title

tests/datafiller/fill_users.php

@@ -19,7 +19,7 @@ function fill_users() {
     $users = array(); //declare only to avoid parsing notice
     require_once 'data_users.php'; //fill the $users array
     $output = array();
-    $output[] = array('title'=>'UsersFillingReport:');
+    $output[] = array('title'=>'Users Filling Report:');
     $i = 1;
     foreach ($users as $i => $user) {
         //first check that the first item doesn't exist already
@@ -28,4 +28,4 @@ function fill_users() {
     	$i++;
     }
     return $output;
-}
+}