Add parentheses to SD macros

Marlin/src/lcd/dogm/status_screen_lite_ST7920.h

@@ -885,7 +885,7 @@ void ST7920_Lite_Status_Screen::update_progress(const bool forceUpdate) {
 
     #if ENABLED(SDSUPPORT)
       // Progress bar % comes from SD when actively printing
-      if (IS_SD_PRINTING) progress_bar_percent = card.percentDone();
+      if (IS_SD_PRINTING()) progress_bar_percent = card.percentDone();
     #endif
 
     // Since the progress bar involves writing