README fix attempt.

Author: arut

README.rst

@@ -160,7 +160,7 @@ changes transparent for user.  That means, you can use common blocking Python
 operations, while their implementations will rely on Nginx non-blocking core.
 The list of classes and functions, unblocked by the module:
 
-- ``socket.socket``
+- ``socket.socket`` class.
    - unconnected (UDP) sockets are not supported
    - standard Python SSL socket wrappers are not supported
 - ``socket.gethostbyname()`` and other resolve functions