Merge pull request #4354 from gouthamve/patch-1

Update link for 'What is ClickHouse?' page

Author: Blargian

docs/introduction-index.md

@@ -9,7 +9,7 @@ Welcome to ClickHouse! Check out the pages below to learn how to get up and runn
 
 | Page                                           | Description                                                        |
 |------------------------------------------------|--------------------------------------------------------------------|
-| [What is ClickHouse?](about-us/intro.mdx)      | Learn more about what ClickHouse is.                               |
+| [What is ClickHouse?](intro)                   | Learn more about what ClickHouse is.                               |
 | [Quick Start](/get-started/quick-start)        | Quick start guide to get you up and running in no time.            |           
 | [Advanced Tutorial](tutorial.md)               | Comfortable with the basics? Let's do something more interesting.  |
 | [Install](getting-started/install/install.mdx) | Learn about the various ways you can install ClickHouse.           |