Added tutorial video link.

Author: ArulrajAboo

README.md

@@ -2,7 +2,7 @@
 
 This quick-start project helps users customize styles in the Syncfusion® [ASP.NET Core Rich Text Editor]( https://www.syncfusion.com/aspnet-core-ui-controls/wysiwyg-rich-text-editor?utm_source=github&utm_medium=listing&utm_campaign=tutorial-videos-aspnetcore-rte-stylecustomization) control. This example shows how to customize the styles of the editor content and toolbar items. This also shows how to customize the styles for the character count and placeholder in the rich text editor.
 
-Watch the video: Coming soon…
+Watch the video: https://www.syncfusion.com/tutorial-videos/aspnet-core/richtexteditor?title=how-to-customize-styles-in-the-asp-net-core-rich-text-editor
 
 Refer to the following documentation to learn about the ASP.NET Core RTE control: https://ej2.syncfusion.com/aspnetcore/documentation/rich-text-editor/styling.