Fix broken notebooks link (#1594)

Author: gdalle

README.md

@@ -30,7 +30,7 @@ Gen is a multi-paradigm (generative, differentiable, incremental) language for p
 GenJAX is an implementation of Gen on top of [JAX](https://github.com/google/jax) - exposing the ability to programmatically construct and manipulate generative functions, as well as [JIT compile + auto-batch inference computations using generative functions onto GPU devices](https://jax.readthedocs.io/en/latest/jax-101/02-jitting.html).
 
 <div align="center">
-<a href="https://genjax.gen.dev/cookbook/">Jump into the notebooks!</a>
+<a href="https://genjax.gen.dev/cookbook/active/jax_basics.html">Jump into the notebooks!</a>
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 </div>