Change CardGroup column count from 2 to 3

Author: BekahHW

docs/guides/overview.mdx

@@ -21,7 +21,7 @@ description: "Comprehensive collection of practical guides for Continue includin
 
 Step-by-step guides for integrating Model Context Protocol (MCP) servers with Continue:
 
-<CardGroup cols={2}>
+<CardGroup cols={3}>
   <Card title="Continue Docs MCP Cookbook" icon="book" href="/guides/continue-docs-mcp-cookbook">
     Use the Continue Docs MCP to write cookbooks, guides, and documentation with AI-powered workflows
   </Card>