docs: document the parameter structure of hookWindowMessage (#28212)

Fixes #28178

Co-authored-by: Samuel Attard <[email protected]>

docs/api/browser-window.md

@@ -1389,6 +1389,8 @@ The native type of the handle is `HWND` on Windows, `NSView*` on macOS, and
 
 * `message` Integer
 * `callback` Function
+  * `wParam` any - The `wParam` provided to the WndProc
+  * `lParam` any - The `lParam` provided to the WndProc
 
 Hooks a windows message. The `callback` is called when
 the message is received in the WndProc.