message: fix the typo in docstring of dense_to_sparse_batch
diff: @@ -50,7 +50,7 @@ def dense_to_sparse_batch(batch_size, row_shape):
  ([[0, 0], [0, 1], [0, 2], [1, 0], [1, 1]], # indices
  ['a', 'b', 'c', 'a', 'b'], # values
  [2, 6]), # dense_shape
  - ([[2, 0], [2, 1], [2, 2], [2, 3]],
  + ([[0, 0], [0, 1], [0, 2], [0, 3]],
  ['a', 'b', 'c', 'd'],
  [1, 6])
  }
  