SDL: SDL_keyboard.h: Note that SDL_GetKeyName() returns uppercase letters.

SDL Commits
1 
From 6473de59b7243e17cca81bf31c370152dfaa87b5 Mon Sep 17 00:00:00 2001
From: "Ryan C. Gordon" <[EMAIL REDACTED]>
Date: Mon, 6 Jan 2025 12:46:56 -0500
Subject: [PATCH] SDL_keyboard.h: Note that SDL_GetKeyName() returns uppercase
 letters.

Reference Issue #11434.
---
 include/SDL3/SDL_keyboard.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/SDL3/SDL_keyboard.h b/include/SDL3/SDL_keyboard.h
index 0b84a712444bf..6d3db29d34868 100644
--- a/include/SDL3/SDL_keyboard.h
+++ b/include/SDL3/SDL_keyboard.h
@@ -318,6 +318,8 @@ extern SDL_DECLSPEC SDL_Scancode SDLCALL SDL_GetScancodeFromName(const char *nam
  *
  * If the key doesn't have a name, this function returns an empty string ("").
  *
+ * Letters will be presented in their uppercase form, if applicable.
+ *
  * \param key the desired SDL_Keycode to query.
  * \returns a UTF-8 encoded string of the key name.
  *