SDL: Sync SDL2 wiki -> header

From ac2fcfcb62e81e7c06262a74a152e6d1d596262a Mon Sep 17 00:00:00 2001
From: SDL Wiki Bot <[EMAIL REDACTED]>
Date: Tue, 22 Nov 2022 23:21:36 +0000
Subject: [PATCH] Sync SDL2 wiki -> header

---
 include/SDL.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/SDL.h b/include/SDL.h
index 41b4d1209e8c..12e7f31a2869 100644
--- a/include/SDL.h
+++ b/include/SDL.h
@@ -191,6 +191,8 @@ extern DECLSPEC void SDLCALL SDL_QuitSubSystem(Uint32 flags);
  *
  *          The return value does not include SDL_INIT_NOPARACHUTE.
  *
+ * \since This function is available since SDL 2.0.0.
+ *
  * \sa SDL_Init
  * \sa SDL_InitSubSystem
  */