SDL: Sync wiki -> header (6d1c3)

From 6d1c3cd6918aa84fe2a0ba7d895169a4f69233bc Mon Sep 17 00:00:00 2001
From: SDL Wiki Bot <[EMAIL REDACTED]>
Date: Sun, 27 Mar 2022 17:11:05 +0000
Subject: [PATCH] Sync wiki -> header

---
 include/SDL_video.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/SDL_video.h b/include/SDL_video.h
index e43cb27ecde..c62e0891ac9 100644
--- a/include/SDL_video.h
+++ b/include/SDL_video.h
@@ -1337,6 +1337,7 @@ extern DECLSPEC void SDLCALL SDL_SetWindowKeyboardGrab(SDL_Window * window,
  * Mouse grab confines the mouse cursor to the window.
  *
  * \param window The window for which the mouse grab mode should be set.
+ * \param grabbed This is SDL_TRUE to grab mouse, and SDL_FALSE to release.
  *
  * \since This function is available since SDL 2.0.16.
  *