message: Typo error fixed execution_callbacks.py
diff: @@ -64,7 +64,7 @@ class InfOrNanError(Exception):
  """Constructor of InfOrNanError.
  Args:
  - op_type: Type name of the op that generated the tensor that generated the
  + op_type: Type name of the op that generated the tensor with
  `inf`(s) or `nan`(s) (e.g., `Div`).
  op_name: Name of the op that generated the tensor with `inf`(s) or
  `nan`(s). This name is set by client and can be `None` if it is unset.
  