docs/library: Add a blank line to fix formatting for ussl docs.

docs/library/ussl.rst

@@ -13,7 +13,8 @@ facilities for network sockets, both client-side and server-side.
 Functions
 ---------
 
-.. function:: ussl.wrap_socket(sock, server_side=False, keyfile=None, certfile=None, cert_reqs=CERT_NONE, ca_certs=None, do_handshake=True) 
+.. function:: ussl.wrap_socket(sock, server_side=False, keyfile=None, certfile=None, cert_reqs=CERT_NONE, ca_certs=None, do_handshake=True)
+
    Takes a `stream` *sock* (usually usocket.socket instance of ``SOCK_STREAM`` type),
    and returns an instance of ssl.SSLSocket, which wraps the underlying stream in
    an SSL context. Returned object has the usual `stream` interface methods like