update toc with tiny agents in python

Author: burtenshaw

units/en/_toctree.yml

@@ -39,7 +39,7 @@
   - local: unit2/gradio-client
     title: Building an MCP Client with Gradio
   - local: unit2/tiny-agents
-    title: Building a Tiny Agent with TypeScript
+    title: Building Tiny Agents with MCP and the Hugging Face Hub
 
 - title: "3. Use Case: Advanced MCP Development"
   sections: