SDL: Sync wiki -> header (e94d4)

From e94d4b8c9b75afccd00d97a8f0153435a4bdff15 Mon Sep 17 00:00:00 2001
From: SDL Wiki Bot <[EMAIL REDACTED]>
Date: Tue, 27 Jul 2021 00:08:05 +0000
Subject: [PATCH] Sync wiki -> header

---
 include/SDL_render.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/include/SDL_render.h b/include/SDL_render.h
index a3fc09ebcf..d80f4d3f53 100644
--- a/include/SDL_render.h
+++ b/include/SDL_render.h
@@ -709,7 +709,8 @@ extern DECLSPEC SDL_Texture * SDLCALL SDL_GetRenderTarget(SDL_Renderer *renderer
  *
  * If the output display is a window, mouse and touch events in the window
  * will be filtered and scaled so they seem to arrive within the logical
- * resolution.
+ * resolution. The SDL_HINT_MOUSE_RELATIVE_SCALING hint controls whether
+ * relative motion events are also scaled.
  *
  * If this function results in scaling or subpixel drawing by the rendering
  * backend, it will be handled using the appropriate quality hints.