SDL: Sync SDL3 wiki -> header (19af3)

From 19af3a2b34ad4bd0c5034ff80a37ed738f9e417e Mon Sep 17 00:00:00 2001
From: SDL Wiki Bot <[EMAIL REDACTED]>
Date: Fri, 1 Nov 2024 19:42:29 +0000
Subject: [PATCH] Sync SDL3 wiki -> header

[ci skip]
---
 include/SDL3/SDL_events.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/include/SDL3/SDL_events.h b/include/SDL3/SDL_events.h
index e15428ef57aa9..5b3d475271a20 100644
--- a/include/SDL3/SDL_events.h
+++ b/include/SDL3/SDL_events.h
@@ -938,6 +938,9 @@ typedef struct SDL_UserEvent
 /**
  * The structure for all events in SDL.
  *
+ * The SDL_Event structure is the core of all event handling in SDL. SDL_Event
+ * is a union of all event structures used in SDL.
+ *
  * \since This struct is available since SDL 3.1.3.
  */
 typedef union SDL_Event