Update calib_dlg.cpp (#7867)

Added values for missing PCTG temperature range. Fixes bug #7323 which caused subsiquent values to not be correct.

src/slic3r/GUI/calib_dlg.cpp

@@ -227,6 +227,7 @@ enum FILAMENT_TYPE : int
     tPLA = 0,
     tABS_ASA,
     tPETG,
+    tPCTG,
     tTPU,
     tPA_CF,
     tPET_CF,
@@ -384,6 +385,10 @@ void Temp_Calibration_Dlg::on_filament_type_changed(wxCommandEvent& event) {
             start = 250;
             end = 230;
             break;
+	case tPCTG:
+            start = 240;
+            end = 280;
+            break;
         case tTPU:
             start = 240;
             end = 210;