bad parameter in chi CustomDist

Author: tvwenger

pymc_experimental/distributions/continuous.py

@@ -273,7 +273,7 @@ class Chi:
     def __new__(cls, name, nu, **kwargs):
         if "observed" not in kwargs:
             kwargs.setdefault("transform", transforms.log)
-        return CustomDist(name, (nu,), dist=chi_dist, class_name="Chi", **kwargs)
+        return CustomDist(name, nu, dist=chi_dist, class_name="Chi", **kwargs)
 
     @classmethod
     def dist(cls, nu, **kwargs):