SDL: Sync SDL3 wiki -> header (d20c7)

From d20c7e537d159d19267852a731cd6484341d0d1e Mon Sep 17 00:00:00 2001
From: SDL Wiki Bot <[EMAIL REDACTED]>
Date: Tue, 10 Mar 2026 12:43:12 +0000
Subject: [PATCH] Sync SDL3 wiki -> header

[ci skip]
---
 include/SDL3/SDL_stdinc.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/SDL3/SDL_stdinc.h b/include/SDL3/SDL_stdinc.h
index 56b19ca12a9f2..df6fb5254787f 100644
--- a/include/SDL3/SDL_stdinc.h
+++ b/include/SDL3/SDL_stdinc.h
@@ -3212,7 +3212,7 @@ extern SDL_DECLSPEC char * SDLCALL SDL_strrev(char *str);
  * Convert a string to uppercase.
  *
  * **WARNING**: Regardless of system locale, this will only convert ASCII
- * values 'A' through 'Z' to uppercase.
+ * values 'a' through 'z' to uppercase.
  *
  * This function operates on a null-terminated string of bytes--even if it is
  * malformed UTF-8!--and converts ASCII characters 'a' through 'z' to their