rename doc titles

docs/source/datasets.rst

-Datasets
-========
+torchvision.datasets
+====================
 
 All datasets are subclasses of :class:`torch.utils.data.Dataset`
 i.e, they have ``__getitem__`` and ``__len__`` methods implemented.

docs/source/index.rst

@@ -12,3 +12,6 @@ architectures, and common image transformations for computer vision.
    models
    transforms
    utils
+
+.. automodule:: torchvision
+   :members:

docs/source/models.rst

-Models
-======
+torchvision.models
+==================
 
 The models subpackage contains definitions for the following model
 architectures:

docs/source/transforms.rst

-Transforms
-==========
+torchvision.transforms
+======================
 
 .. currentmodule:: torchvision.transforms
 

docs/source/utils.rst

-Utils
-=====
+torchvision.utils
+=================
 
 .. currentmodule:: torchvision.utils
 
@@ -7,6 +7,3 @@ Utils
 
 .. autofunction:: save_image
 
-
-.. automodule:: torchvision
-   :members: