fix: ajax

Bug fix, add flush for reference data

src/Controller/AjaxController.php

@@ -248,6 +248,7 @@ class AjaxController extends AbstractController
         if ($ref) {
             $ref->setContent($data->text);
             $emi->persist($ref);
+            $emi->flush();
             $res = $this->json(['msg' => 'Reference updated.']);
         }