🩹 Fix G33 output (#26299)

Co-authored-by: Scott Lahteine <thinkyhead@users.noreply.github.com>

Marlin/src/gcode/calibrate/G33.cpp

@@ -459,9 +459,8 @@ void GcodeSuite::G33() {
   SERIAL_ECHOLNPGM("G33 Auto Calibrate");
 
   // Report settings
-  PGM_P const checkingac = PSTR("Checking... AC");
-  SERIAL_ECHOPGM_P(checkingac);
-  SERIAL_ECHOPGM(" at radius:", dcr);
+  FSTR_P const checkingac = F("Checking... AC");
+  SERIAL_ECHO(checkingac, F(" at radius:"), dcr);
   if (verbose_level == 0) SERIAL_ECHOPGM(" (DRY-RUN)");
   SERIAL_EOL();
   ui.set_status(checkingac);