Readme: Add package name to patching_dataset_class() mention.

For consistency with other function mentions.  Also remove in-sentence
newline.

README.rst

@@ -23,8 +23,7 @@ After that, optimization will be attempted for any slicing of a dataset (of the
 
 .. _hdf5plugin: https://github.com/silx-kit/hdf5plugin
 
-You may globally disable the optimization after importing ``b2h5py`` by calling ``b2h5py.unpatch_dataset_class()``, and enable it again with ``b2h5py.patch_dataset_class()``.  You may
-also perform this patching temporarily using ``patching_dataset_class()`` to get a context manager.
+You may globally disable the optimization after importing ``b2h5py`` by calling ``b2h5py.unpatch_dataset_class()``, and enable it again with ``b2h5py.patch_dataset_class()``. You may also perform this patching temporarily by using ``b2h5py.patching_dataset_class()`` to get a context manager.
 
 Even if the module is imported and the ``Dataset`` class is patched, you may still force-disable the optimization by setting ``BLOSC2_FILTER=1`` in the environment.