corrected cookbook URL (#2709)

previous link led to fastrtc.org homepage. added /cookbook

Author: fdaudens

fastrtc.md

@@ -109,7 +109,7 @@ You can then call the number and it will connect you to your stream!
 ## Next Steps
 
 - Read the [docs](https://fastrtc.org/) to learn more about the basics of `FastRTC`.
-- The best way to start building is by checking out the [cookbook](https://fastrtc.org/). Find out how to integrate with popular LLM providers (including OpenAI and Gemini's real-time APIs), integrate your stream with a FastAPI app and do a custom deployment, return additional data from your handler, do video processing, and more!
+- The best way to start building is by checking out the [cookbook](https://fastrtc.org/cookbook). Find out how to integrate with popular LLM providers (including OpenAI and Gemini's real-time APIs), integrate your stream with a FastAPI app and do a custom deployment, return additional data from your handler, do video processing, and more!
 - ⭐️ Star the [repo](https://github.com/freddyaboulton/fastrtc) and file bug and issue requests!
 - Follow the [FastRTC Org](https://huggingface.co/fastrtc) on HuggingFace for updates and check out deployed examples!