changing last typo

islandora.module

@@ -1949,7 +1949,7 @@ function islandora_islandora_datastream_access($op, AbstractDatastream $datastre
     module_load_include('inc', 'islandora', 'includes/derivatives');
     $applicable_hook = FALSE;
     $object = $datastream->parent;
-    $hooks = islandora_invoke_hook_list(ISLANDORA_DERVIATIVE_CREATION_HOOK, $object->models, array($object));
+    $hooks = islandora_invoke_hook_list(ISLANDORA_DERIVATIVE_CREATION_HOOK, $object->models, array($object));
     $hooks = islandora_filter_derivatives($hooks, array('force' => TRUE), $object);
     foreach ($hooks as $hook) {
       if (isset($hook['destination_dsid']) && $hook['destination_dsid'] == $datastream->id &&