docs: fix wrong links (#9735)

Relative links do not work correctly here, use absolut.

Author: jd

src/content/docs/merge-queue/setup.mdx

@@ -40,7 +40,7 @@ Remember, the PR will only be merged once the conditions defined in the
 `merge_conditions` field are met.
 
 You can also [configure Mergify to automatically queue pull requests that are
-ready](rules/#autoqueueing-pull-requests).
+ready](/merge-queue/rules/#autoqueueing-pull-requests).
 
 ## Configuring the Merge Queue Rules