bpo-42523: Fix supported versions in "Using Python on Windows" (GH-23603)

diff --git a/Doc/using/windows.rst b/Doc/using/windows.rst
index 78c1e03..265c07c 100644
--- a/Doc/using/windows.rst
+++ b/Doc/using/windows.rst
@@ -23,8 +23,8 @@
 
 As specified in :pep:`11`, a Python release only supports a Windows platform
 while Microsoft considers the platform under extended support. This means that
-Python |version| supports Windows Vista and newer. If you require Windows XP
-support then please install Python 3.4.
+Python |version| supports Windows 8.1 and newer. If you require Windows 7
+support, please install Python 3.8.
 
 There are a number of different installers available for Windows, each with
 certain benefits and downsides.