docs: fix ui-inspector links in walkthrough

Author: idosal

docs/src/guide/server/ruby/walkthrough.md

@@ -135,7 +135,7 @@ The server will be available at `http://localhost:8081/mcp`.
 
 To test your new endpoint, you can use the [`ui-inspector`](https://github.com/idosal/ui-inspector):
 
-1. Go to the [ui-inspector repo](https://idosal.github.io/ui-inspector/) and run locally.
+1. Go to the [ui-inspector repo](https://github.com/idosal/ui-inspector/) and run locally.
 2. Open the local client in a browser (usually `http://localhost:6274`)
 3. Change the Transport Type to "Streamable HTTP".
 4. Enter your server's MCP endpoint URL: `http://localhost:3000/mcp`.