Normalize README phrase [skip ci]

Author: DevExpressExampleBot

README.md

@@ -48,7 +48,7 @@ This example demonstrates how to update multiple cell values after a user select
 - [DataGrid for DevExtreme - How to allow users select multiple cells](https://github.com/DevExpress-Examples/devextreme-datagrid-multiple-cell-selection)
 
 <!-- feedback -->
-## Does this example address your development requirements/objectives?
+## Does This Example Address Your Development Requirements/Objectives?
 
 [<img src="https://www.devexpress.com/support/examples/i/yes-button.svg"/>](https://www.devexpress.com/support/examples/survey.xml?utm_source=github&utm_campaign=devextreme-datagrid-update-multiple-cells&~~~was_helpful=yes) [<img src="https://www.devexpress.com/support/examples/i/no-button.svg"/>](https://www.devexpress.com/support/examples/survey.xml?utm_source=github&utm_campaign=devextreme-datagrid-update-multiple-cells&~~~was_helpful=no)