fix locales demo

demos/locales.html

@@ -7,7 +7,7 @@
 <link href='../dist/timegrid/main.css' rel='stylesheet' />
 <link href='../dist/list/main.css' rel='stylesheet' />
 <script src='../dist/core/main.js'></script>
-<script src='../dist/fullcalendar/locales-all.js'></script>
+<script src='../dist/core/locales-all.js'></script>
 <script src='../dist/daygrid/main.js'></script>
 <script src='../dist/timegrid/main.js'></script>
 <script src='../dist/list/main.js'></script>