Fix frequency limit editing (#17763)

Marlin/src/lcd/menu/menu_advanced.cpp

@@ -415,7 +415,7 @@ void menu_cancelobject();
 
     #ifdef XY_FREQUENCY_LIMIT
       EDIT_ITEM(int8, MSG_XY_FREQUENCY_LIMIT, &planner.xy_freq_limit_hz, 0, 100, planner.refresh_frequency_limit, true);
-      editable.uint8 = uint8_t(LROUND(planner.xy_freq_min_speed_factor * 255 * 100)); // percent to u8
+      editable.uint8 = uint8_t(LROUND(planner.xy_freq_min_speed_factor * 255)); // percent to u8
       EDIT_ITEM(percent, MSG_XY_FREQUENCY_FEEDRATE, &editable.uint8, 3, 255, []{ planner.set_min_speed_factor_u8(editable.uint8); }, true);
     #endif