DataGrid: change demo link (#5948)

* DataGrid: change demo link

* Another link

Author: vladaskorohodova

api-reference/10 UI Components/GridBase/1 Configuration/editing/refreshMode.md

@@ -49,6 +49,6 @@ The following table shows the operations that are performed after saving changes
 
 [note]
 
-When the **refreshMode** is *"reshape"* or *"repaint"*, the server should respond to the insert or update request by sending back the data item saved in the database. See the `DataGridWebApiController` tab in the [CRUD Operations demo](https://js.devexpress.com/Demos/WidgetsGallery/Demo/DataGrid/CRUDOperations/Mvc/Light) for an example of the server-side implementation. The `InsertOrder` and `UpdateOrder` actions illustrate this case.
+When the **refreshMode** is *"reshape"* or *"repaint"*, the server should respond to the insert or update request by sending back the data item saved in the database. See the `DataGridWebApiController` tab in the [CRUD Operations demo](https://demos.devexpress.com/ASPNetMvc/Demo/DataGrid/CRUDOperations) for an example of the server-side implementation. The `InsertOrder` and `UpdateOrder` actions illustrate this case.
 
 [/note]

concepts/05 UI Components/FileUploader/40 File Validation.md

@@ -115,5 +115,5 @@ The FileUploader allows you to restrict the extension ([allowedFileExtensions](/
 Files are validated on the client. However, you should also implement server-side validation. Refer to the demo below to see an example for an ASP.NET server.
 
 #include btn-open-demo with {
-    href: "https://js.devexpress.com/Demos/WidgetsGallery/Demo/FileUploader/Validation/Mvc/Light/"
+    href: "https://demos.devexpress.com/ASPNetMvc/Demo/FileUploader/Validation"
 }