Fix docstring of Caltech101 dataset (#4342)

torchvision/datasets/caltech.py

@@ -18,9 +18,10 @@ class Caltech101(VisionDataset):
         root (string): Root directory of dataset where directory
             ``caltech101`` exists or will be saved to if download is set to True.
         target_type (string or list, optional): Type of target to use, ``category`` or
-        ``annotation``. Can also be a list to output a tuple with all specified target types.
-        ``category`` represents the target class, and ``annotation`` is a list of points
-        from a hand-generated outline. Defaults to ``category``.
+            ``annotation``. Can also be a list to output a tuple with all specified
+            target types.  ``category`` represents the target class, and
+            ``annotation`` is a list of points from a hand-generated outline.
+            Defaults to ``category``.
         transform (callable, optional): A function/transform that takes in an PIL image
             and returns a transformed version. E.g, ``transforms.RandomCrop``
         target_transform (callable, optional): A function/transform that takes in the