SDL: Added a patch note about WinRT/UWP WGI support

From aa1d76e829c478bf19f8c1ef321f1c2c45d5b33d Mon Sep 17 00:00:00 2001
From: Sam Lantinga <[EMAIL REDACTED]>
Date: Sat, 27 Nov 2021 10:55:54 -0800
Subject: [PATCH] Added a patch note about WinRT/UWP WGI support

 WhatsNew.txt | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/WhatsNew.txt b/WhatsNew.txt
index 7b99769e5a..71997e133d 100644
--- a/WhatsNew.txt
+++ b/WhatsNew.txt
@@ -27,6 +27,9 @@ General:
 * Added the hint SDL_HINT_IME_SHOW_UI to show native UI components instead of hiding them (defaults off)
+* WGI is used instead of XInput for better controller support in UWP apps
 * Added the hint SDL_HINT_SCREENSAVER_INHIBIT_ACTIVITY_NAME to set the activity that's displayed by the system when the screensaver is disabled
 * Added the hint SDL_HINT_LINUX_JOYSTICK_CLASSIC to control whether /dev/input/js* or /dev/input/event* are used as joystick devices