docs: add links to hosted V1 and V2 API reference docs

🏠 Remote-Dev: homespace

Author: localden

README.md

@@ -157,6 +157,8 @@ For more details on how to run these examples (including recommended commands an
     - [docs/protocol.md](docs/protocol.md) – protocol features: ping, progress, cancellation, pagination, capability negotiation, and JSON Schema.
     - [docs/faq.md](docs/faq.md) – environment and troubleshooting FAQs (including Node.js Web Crypto support).
 - External references:
+    - [V1 API reference](https://modelcontextprotocol.github.io/typescript-sdk/)
+    - [V2 API reference](https://modelcontextprotocol.github.io/typescript-sdk/v2/)
     - [Model Context Protocol documentation](https://modelcontextprotocol.io)
     - [MCP Specification](https://spec.modelcontextprotocol.io)
     - [Example Servers](https://github.com/modelcontextprotocol/servers)