Apply suggestions from code review

Co-authored-by: Elena Khamliuk <80813840+khamlyuk@users.noreply.github.com>
Co-authored-by: Anton Sameishchev <anton.sameishchev@devexpress.com>

Author: friedcucumber

README.md

@@ -8,9 +8,9 @@
 # Blazor Grid - Customize Context Menu
 
 This example enables, customizes, and implements context menus in Blazor Grid and Toolbar components. It demonstrates the following tasks:
-* Enable built-in context menus for DxGrid's predefined areas: header, footer, data row, group panel, group row, and group footer.
-* Customize context menu items for header, footer, and data rows using DxGrid APIs.
-* Define custom context menus for areas that do not include built-in context menus.
+* Enables built-in context menus for predefined Grid areas: header, footer, data row, group panel, group row, and group footer.
+* Customizes context menu items for header, footer, and data rows using Grid APIs.
+* Defines custom context menus for areas that do not include built-in context menus.
 
 ![Grid with Context Menu for a column](result.png)
 
@@ -31,7 +31,7 @@ Set the [ContextMenus](https://docs.devexpress.com/Blazor/DevExpress.Blazor.DxGr
 
 The `DxGrid` component includes built-in APIs used to customize context menu items. This scenario affects the following Grid areas: header, footer, and data rows.
 
-In the Grid's [CustomizeContextMenu](https://docs.devexpress.com/Blazor/DevExpress.Blazor.DxGrid.CustomizeContextMenu) event handler, call the helper method defined in the [GridContextMenuHelper.cs](./CS/GridWithContextMenu/Data/GridContextMenuHelper.cs#L298-L365) class to customize the built-in context menu items.
+In the [CustomizeContextMenu](https://docs.devexpress.com/Blazor/DevExpress.Blazor.DxGrid.CustomizeContextMenu) event handler, call the helper method defined in the [GridContextMenuHelper.cs](./CS/GridWithContextMenu/Data/GridContextMenuHelper.cs#L298-L365) class to customize built-in context menu items.
 
 ```
 <DxGrid @ref="Grid"
@@ -50,19 +50,19 @@ In the Grid's [CustomizeContextMenu](https://docs.devexpress.com/Blazor/DevExpre
 
 ### Add Custom Context Menus
 
-Follow the steps below to display custom context menus for the toolbar component, Grid's edit row, and Grid's pager:
+To display custom context menus for the toolbar component, Grid's edit row and pager, you must:
 
-1. In the [GridContextMenuContainer](./CS/GridWithContextMenu/Pages/GridContextMenuContainer.razor#L4-L28) component, define the context menu components.
-2. In the [GridContextMenuHelper](./CS/GridWithContextMenu/Data/GridContextMenuHelper.cs#L31-L59) class, implement context menu item generation, state management, and click handlers. The Blazor [Grid API](https://docs.devexpress.com/Blazor/DevExpress.Blazor.DxGrid._methods) uses them to execute commands.
+1. In the [GridContextMenuContainer](./CS/GridWithContextMenu/Pages/GridContextMenuContainer.razor#L4-L28) component, define context menu components.
+2. In the [GridContextMenuHelper](./CS/GridWithContextMenu/Data/GridContextMenuHelper.cs#L31-L59) class, implement context menu item generation, state management, and click handlers. The Blazor [Grid API](https://docs.devexpress.com/Blazor/DevExpress.Blazor.DxGrid._methods) calls these helper methods to execute commands.
 3. Add the [oncontextmenu:preventDefault](./CS/GridWithContextMenu/Pages/Index.razor#L14) directive to disable the standard browser context menu.
-4. In the Grid's [CustomizeElement](https://docs.devexpress.com/Blazor/DevExpress.Blazor.DxGrid.CustomizeElement) event handler, subscribe to the **contextmenu** event to display the custom context menu.
+4. In the [CustomizeElement](https://docs.devexpress.com/Blazor/DevExpress.Blazor.DxGrid.CustomizeElement) event handler, subscribe to the **contextmenu** event to display a custom context menu.
 
 ```
 <DxGrid @ref="Grid"
         ...
         CustomizeElement="Grid_CustomizeElement"
         @oncontextmenu:preventDefault>
-        <!-- ... -->
+        @* ... *@
 </DxGrid>
 
 <GridContextMenuContainer Grid="Grid" @ref="ContextMenuContainer" />
@@ -83,7 +83,7 @@ Follow the steps below to display custom context menus for the toolbar component
 }
 ```
 
-### Video
+#### Video
 
 - [Adding a Context Menu to a Grid](https://www.youtube.com/watch?v=TfBR77ARnf8&t)