fix docstring of CelebA regarding arrays (#7161)

Author: pmeier

torchvision/datasets/celeba.py

@@ -23,10 +23,10 @@ class CelebA(VisionDataset):
             or ``landmarks``. Can also be a list to output a tuple with all specified target types.
             The targets represent:
 
-                - ``attr`` (np.array shape=(40,) dtype=int): binary (0, 1) labels for attributes
+                - ``attr`` (Tensor shape=(40,) dtype=int): binary (0, 1) labels for attributes
                 - ``identity`` (int): label for each person (data points with the same identity are the same person)
-                - ``bbox`` (np.array shape=(4,) dtype=int): bounding box (x, y, width, height)
-                - ``landmarks`` (np.array shape=(10,) dtype=int): landmark points (lefteye_x, lefteye_y, righteye_x,
+                - ``bbox`` (Tensor shape=(4,) dtype=int): bounding box (x, y, width, height)
+                - ``landmarks`` (Tensor shape=(10,) dtype=int): landmark points (lefteye_x, lefteye_y, righteye_x,
                   righteye_y, nose_x, nose_y, leftmouth_x, leftmouth_y, rightmouth_x, rightmouth_y)
 
             Defaults to ``attr``. If empty, ``None`` will be returned as target.