message: Added missing ``` to mark the end of python code in the comment.
diff: @@ -79,6 +79,7 @@ class LinearOperatorToeplitz(linear_operator.LinearOperator):
  x = ... Shape [3, 4] Tensor
  operator.matmul(x)
  ==> Shape [3, 4] Tensor
  + ```
  #### Shape compatibility
  