chore: Update cookbook url in README.md (#8387)

Adding the new cookbook url

README.md

@@ -31,7 +31,7 @@ If you're new to the project, check out ["What is Haystack?"](https://haystack.d
 through the ["Get Started Guide"](https://haystack.deepset.ai/overview/quick-start) and build your first LLM application
 in a matter of minutes. Keep learning with the [tutorials](https://haystack.deepset.ai/tutorials?v=2.0). For more advanced
 use cases, or just to get some inspiration, you can browse our Haystack recipes in the
-[Cookbook](https://github.com/deepset-ai/haystack-cookbook).
+[Cookbook](https://haystack.deepset.ai/cookbook).
 
 At any given point, hit the [documentation](https://docs.haystack.deepset.ai/v2.0/docs/intro) to learn more about Haystack, what can it do for you and the technology behind.