Remove newlines from log messages

docs/hello.c

@@ -21,7 +21,7 @@ SDL_AppResult SDL_AppInit(void **appstate, int argc, char *argv[])
 {
     /* Create the window */
     if (!SDL_CreateWindowAndRenderer("Hello World", 800, 600, SDL_WINDOW_FULLSCREEN, &window, &renderer)) {
-        SDL_Log("Couldn't create window and renderer: %s\n", SDL_GetError());
+        SDL_Log("Couldn't create window and renderer: %s", SDL_GetError());
         return SDL_APP_FAILURE;
     }
     return SDL_APP_CONTINUE;