DOC: fix matrix_transpose doctest

[skip actions][skip azp][skip cirrus]

Author: luxedo

numpy/_core/fromnumeric.py

@@ -731,7 +731,6 @@ def matrix_transpose(x, /):
     >>> np.matrix_transpose([[[1, 2], [3, 4]], [[5, 6], [7, 8]]])
     array([[[1, 3],
             [2, 4]],
-
            [[5, 7],
             [6, 8]]])