SDL: SDL_keyboard.h: Added a `\sa` to SDL_Keysym's docs.

From 45df0842875e51a81ddef58ad08fe98c2d15af33 Mon Sep 17 00:00:00 2001
From: "Ryan C. Gordon" <[EMAIL REDACTED]>
Date: Thu, 16 May 2024 12:19:50 -0400
Subject: [PATCH] SDL_keyboard.h: Added a `\sa` to SDL_Keysym's docs.

---
 include/SDL3/SDL_keyboard.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/include/SDL3/SDL_keyboard.h b/include/SDL3/SDL_keyboard.h
index a5e460254e3d3..8ba0981009061 100644
--- a/include/SDL3/SDL_keyboard.h
+++ b/include/SDL3/SDL_keyboard.h
@@ -59,6 +59,9 @@ typedef Uint32 SDL_KeyboardID;
  * SDL_EVENT_TEXT_INPUT event.
  *
  * \since This struct is available since SDL 3.0.0.
+ *
+ * \sa SDL_Scancode
+ * \sa SDL_Keycode
  */
 typedef struct SDL_Keysym
 {