SDL: Improved keycode documentation

From bffc4ccc501a2cac1fdb77baa752f0a7006cefe7 Mon Sep 17 00:00:00 2001
From: Sam Lantinga <[EMAIL REDACTED]>
Date: Tue, 2 Dec 2025 15:31:34 -0800
Subject: [PATCH] Improved keycode documentation

---
 include/SDL3/SDL_keycode.h | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/include/SDL3/SDL_keycode.h b/include/SDL3/SDL_keycode.h
index a8b1378ec933b..43c7a522c2ea0 100644
--- a/include/SDL3/SDL_keycode.h
+++ b/include/SDL3/SDL_keycode.h
@@ -45,11 +45,13 @@
  * `SDLK_*` constant for those keys that do not generate characters.
  *
  * A special exception is the number keys at the top of the keyboard which map
- * to SDLK_0...SDLK_9 on AZERTY layouts.
+ * by default to SDLK_0...SDLK_9 on AZERTY layouts.
  *
  * Keys with the `SDLK_EXTENDED_MASK` bit set do not map to a scancode or
  * unicode code point.
  *
+ * Many common keycodes are listed below, but this list is not exhaustive.
+ *
  * \since This datatype is available since SDL 3.2.0.
  *
  * \sa SDL_HINT_KEYCODE_OPTIONS