Added https to CDN link

pages/forms/editors.html

@@ -511,7 +511,7 @@
     <!-- AdminLTE for demo purposes -->
     <script src="../../dist/js/demo.js" type="text/javascript"></script>
     <!-- CK Editor -->
-    <script src="//cdn.ckeditor.com/4.4.3/standard/ckeditor.js"></script>
+    <script src="https://cdn.ckeditor.com/4.4.3/standard/ckeditor.js"></script>
     <!-- Bootstrap WYSIHTML5 -->
     <script src="../../plugins/bootstrap-wysihtml5/bootstrap3-wysihtml5.all.min.js" type="text/javascript"></script>
     <script type="text/javascript">