fix URL

Author: ethanpalm

ai/agent-readiness-checks.mdx

@@ -4,7 +4,7 @@ description: "What each Agent Rank check tests, why it matters, and how to make
 keywords: ["agent rank", "agent friendly"]
 ---
 
-[Agent Rank](https://agentrank.mintlify.com) scores your documentation site on how accessible it is to AI agents. This page explains what each agent readiness check tests, why it matters, and how to make your documentation more agent friendly.
+[Agent Rank](https://agentrank.io) scores your documentation site on how accessible it is to AI agents. This page explains what each agent readiness check tests, why it matters, and how to make your documentation more agent friendly.
 
 ## How scoring works