Changed GUI window name

pt2d/gui/mainWindow.py

@@ -20,7 +20,7 @@ class MainWindow(QMainWindow):
         It initializes various attributes related to the image processing and user interface.
         """
         super().__init__()
-        self.setWindowTitle("Test GUI")
+        self.setWindowTitle("Path Tracing in 2D images")
 
         self._last_loaded_pixmap = None
         self._circle_calibrated_radius = 6