Issue #25874: Clarify platform support in the "Using Python on Windows" doc.

Thanks to Chris Wilcox for the initial patch.
diff --git a/Misc/ACKS b/Misc/ACKS
index cd715de..81353f2 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -1554,6 +1554,7 @@
 Gerry Wiener
 Frank Wierzbicki
 Santoso Wijaya
+Chris Wilcox
 Bryce "Zooko" Wilcox-O'Hearn
 Timothy Wild
 Jakub Wilk