Adding Learning Hub link

Author: ajosh0504

docs/summary.mdx

@@ -11,6 +11,6 @@ Congratulations! Following this lab, you have successfully:
 * built an AI agent with memory
 
 Here are some resources that you might find helpful:
-* [MongoDB Developer Center](https://mongodb.com/developer/?utm_campaign=devrel&utm_source=workshop&utm_medium=cta&utm_content=ai_agents_workshop&utm_term=apoorva_joshi)
+* [AI Learning Hub](https://www.mongodb.com/resources/use-cases/artificial-intelligence?utm_campaign=devrel&utm_source=workshop&utm_medium=cta&utm_content=ai_agents_workshop&utm_term=apoorva_joshi)
 * [GenAI Code Examples Repository](https://github.com/mongodb-developer/GenAI-Showcase)
 * [GenAI Community Forums](https://www.mongodb.com/community/forums/c/generative-ai/162/?utm_campaign=devrel&utm_source=workshop&utm_medium=cta&utm_content=ai_agents_workshop&utm_term=apoorva_joshi)