docs: unlist tutorials for extensions with archived or moved servers (#5116)

documentation/docs/mcp/brave-mcp.md

@@ -1,6 +1,7 @@
 ---
 title: Brave Search Extension
 description: Add Brave Search API as a Goose Extension
+unlisted: true
 ---
 
 import Tabs from '@theme/Tabs';
@@ -10,6 +11,8 @@ import GooseDesktopInstaller from '@site/src/components/GooseDesktopInstaller';
 
 <YouTubeShortEmbed videoUrl="https://www.youtube.com/embed/kD2YA61NTLU" />
 
+Server moved
+
 This tutorial will get you started with the [Brave Search MCP Server](https://github.com/modelcontextprotocol/servers/tree/main/src/brave-search) as a Goose extension to enable interactive searches for both web and local searches.
 
 :::tip TLDR