docs(common): add page templates and building blocks section (#2262)

* docs(common): add page templates and building blocks section

* docs(common): address comments

Author: xristianstefanov

introduction.md

@@ -60,6 +60,9 @@ You can watch a YouTube playlist of getting started tutorials for Blazor (videos
 
 Use [our feedback portal](https://feedback.telerik.com/blazor) to tell us which components you want us to create and how you intend to use them with Blazor.
 
+## Page Templates and Building Blocks
+
+Page Templates offer ready-to-use Blazor layouts that effectively integrate the Telerik UI for Blazor components. These templates consist of Building Blocks, which are the individual elements that form the complete layouts. The templates and blocks streamline the development process by providing pre-designed, customizable elements. For more details, refer to the [Page Templates and Building Blocks documentation](https://www.telerik.com/design-system/docs/ui-templates/overview/).
 
 ## Trial Version and Commercial License