deprectae extension and update prompt article

Author: didiyordanova

ai/copilot-extension.md

@@ -11,6 +11,11 @@ position: 3
 
 The Telerik MAUI [GitHub Copilot](https://github.com/features/copilot) extension is an AI-powered coding assistant that provides specialized knowledge about [Telerik UI for .NET MAUI components](https://www.telerik.com/maui-ui). 
 
+>important [Microsoft is sunsetting GitHub Copilot extensions](https://github.blog/changelog/2025-09-24-deprecate-github-copilot-extensions-github-apps/) on November 10th, 2025, in favor of the Model Context Protocol (MCP) standard.
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+From that date, the Telerik and Kendo UI AI Coding Assistants will be available exclusively through our [MCP server]({%slug ai-mcp-server%}), ensuring you continue to enjoy the same powerful capabilities that are delivered by a modern, open, and officially recommended standard.
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 This extension enhances GitHub Copilot with proprietary context about Telerik MAUI controls, helping you:
 
 * Generate code snippets using Telerik MAUI components.