SDL: docs: Hint envvars needs to use the hint string, not the macro name

From 94240c197def425bd45047abb80e9eb694964083 Mon Sep 17 00:00:00 2001
From: Frank Praznik <[EMAIL REDACTED]>
Date: Sun, 28 Jan 2024 15:12:03 -0500
Subject: [PATCH] docs: Hint envvars needs to use the hint string, not the
 macro name

---
 docs/README-wayland.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/docs/README-wayland.md b/docs/README-wayland.md
index 85ac3e5d6270..6b4aa6ce2c80 100644
--- a/docs/README-wayland.md
+++ b/docs/README-wayland.md
@@ -12,7 +12,7 @@ encounter limitations or behavior that is different from other windowing systems
   DPI-aware to be automatically scaled by the window manager, which results in them being blurry. SDL can _attempt_ to
   scale these applications such that they will be output with a 1:1 pixel aspect, however this may be buggy, especially
   with odd-sized windows and/or scale factors that aren't quarter-increments (125%, 150%, etc...). To enable this, set
-  the environment variable `SDL_HINT_VIDEO_WAYLAND_SCALE_TO_DISPLAY=1`
+  the environment variable `SDL_VIDEO_WAYLAND_SCALE_TO_DISPLAY=1`
 
 ### Window decorations are missing, or the decorations look strange