Fix typo: DiretMedia->DirectMedia

include/SDL3/SDL_properties.h

@@ -1,5 +1,5 @@
 /*
-  Simple DiretMedia Layer
+  Simple DirectMedia Layer
   Copyright (C) 1997-2024 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied

src/SDL_properties.c

@@ -1,5 +1,5 @@
 /*
-  Simple DiretMedia Layer
+  Simple DirectMedia Layer
   Copyright (C) 1997-2024 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied

src/SDL_properties_c.h

@@ -1,5 +1,5 @@
 /*
-  Simple DiretMedia Layer
+  Simple DirectMedia Layer
   Copyright (C) 1997-2024 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied