Update README.md

Author: murphyk

dynamax/generalized_gaussian_ssm/dekf/README.md

@@ -1,2 +1,3 @@
 The diagonal EKF code (used in our paper https://openreview.net/pdf?id=asgeEt25kk)
-has moved to https://github.com/probml/dynamax/tree/main/dynamax/rebayes.
+has moved to https://github.com/probml/dynamax
+