fix typo

Author: OriolAbril

pytensor/xtensor/type.py

@@ -195,13 +195,14 @@ def rename(self, new_name_or_name_dict, **names):
             name_dict = new_name_or_name_dict
         return rename(name_dict, **names)
 
-
     def stack(self, dim, **dims):
         from pytensor.xtensor.shape import stack
+
         return stack(self, dim, **dims)
 
-    def unstack(self, din, **dims):
+    def unstack(self, dim, **dims):
         from pytensor.xtensor.shape import unstack
+
         return unstack(self, dim, **dims)
 
     # def swap_dims(self, *args, **kwargs):