message: Fix logdet documentation error
  Example incorrectly refers to tf.logdet rather than tf.linalg.logdet
diff: @@ -68,7 +68,7 @@ def logdet(matrix, name=None):
  # Compute the determinant of a matrix while reducing the chance of over- or
  underflow:
  A = ... # shape 10 x 10
  - det = tf.exp(tf.logdet(A)) # scalar
  + det = tf.exp(tf.linalg.logdet(A)) # scalar
  ```
  Args:
  