Update winsound.rst

Author: DimmaDont

Doc/library/winsound.rst

@@ -13,9 +13,12 @@
 --------------
 
 The :mod:`winsound` module provides access to the basic sound-playing machinery
-provided by Windows platforms.  It includes functions and several constants.
+provided by Windows platforms.
 
 
+Functions
+------------------
+
 .. function:: Beep(frequency, duration)
 
    Beep the PC's speaker. The *frequency* parameter specifies frequency, in hertz,
@@ -46,6 +49,9 @@ provided by Windows platforms.  It includes functions and several constants.
    error, :exc:`RuntimeError` is raised.
 
 
+Constants
+------------------
+
 .. data:: SND_FILENAME
 
    The *sound* parameter is the name of a WAV file. Do not use with