Update SDL_video.h

Led to the actual list of WindowsFlag in the documentation of the SDL_CreateWindow method

include/SDL3/SDL_video.h

@@ -819,14 +819,28 @@ extern SDL_DECLSPEC SDL_Window * const * SDLCALL SDL_GetWindows(int *count);
  *
  * - `SDL_WINDOW_FULLSCREEN`: fullscreen window at desktop resolution
  * - `SDL_WINDOW_OPENGL`: window usable with an OpenGL context
- * - `SDL_WINDOW_VULKAN`: window usable with a Vulkan instance
- * - `SDL_WINDOW_METAL`: window usable with a Metal instance
+ * - `SDL_WINDOW_OCCLUDED`: window partially or completely obscured by another window
  * - `SDL_WINDOW_HIDDEN`: window is not visible
  * - `SDL_WINDOW_BORDERLESS`: no window decoration
  * - `SDL_WINDOW_RESIZABLE`: window can be resized
  * - `SDL_WINDOW_MINIMIZED`: window is minimized
  * - `SDL_WINDOW_MAXIMIZED`: window is maximized
  * - `SDL_WINDOW_MOUSE_GRABBED`: window has grabbed mouse focus
+ * - `SDL_WINDOW_INPUT_FOCUS`: window has input focus
+ * - `SDL_WINDOW_MOUSE_FOCUS`: window has mouse focus
+ * - `SDL_WINDOW_EXTERNAL`: window not created by SDL
+ * - `SDL_WINDOW_MODAL`: window is modal
+ * - `SDL_WINDOW_HIGH_PIXEL_DENSITY`: window uses high pixel density back buffer if possible
+ * - `SDL_WINDOW_MOUSE_CAPTURE`: window has mouse captured (unrelated to MOUSE_GRABBED)
+ * - `SDL_WINDOW_ALWAYS_ON_TOP`: window should always be above others
+ * - `SDL_WINDOW_UTILITY`: window should be treated as a utility window, not showing in the task bar and window list
+ * - `SDL_WINDOW_TOOLTIP`: window should be treated as a tooltip and does not get mouse or keyboard focus, requires a parent window
+ * - `SDL_WINDOW_POPUP_MENU`: window should be treated as a popup menu, requires a parent window
+ * - `SDL_WINDOW_KEYBOARD_GRABBED`: window has grabbed keyboard input
+ * - `SDL_WINDOW_VULKAN`: window usable with a Vulkan instance
+ * - `SDL_WINDOW_METAL`: window usable with a Metal instance
+ * - `SDL_WINDOW_TRANSPARENT`: window with transparent buffer
+ * - `SDL_WINDOW_NOT_FOCUSABLE`: window should not be focusable
  *
  * The SDL_Window is implicitly shown if SDL_WINDOW_HIDDEN is not set.
  *