docs: Note that using the Wayland display scaling mode can have imprecision when positioning due to unit conversion and rounding

include/SDL3/SDL_hints.h

@@ -3471,6 +3471,7 @@ extern "C" {
  *
  * - Rounding errors can result with odd window sizes and/or desktop scales,
  *   which can cause the window contents to appear slightly blurry.
+ * - Positioning the window may be imprecise due to unit conversions and rounding.
  * - The window may be unusably small on scaled desktops.
  * - The window may jump in size when moving between displays of different
  *   scale factors.