fix(example: bug in example notebook for turning shift off

Author: MattTheCuber

.gitignore

@@ -9,6 +9,7 @@ build/
 
 *.stl
 *.obj
+*.vtk
 *.ipynb
 *.nrrd
 

example.ipynb

@@ -171,11 +171,11 @@
    "source": [
     "# Find the non-manifold edges\n",
     "mender = EdgeMender(mesh)\n",
-    "mender.repair(shift_distance=0.1 if shift else 0.0)\n",
+    "mender.repair(shift_distance=0.1 if shift.value else 0.0)\n",
     "remaining_non_manifold_edges = mender.find_non_manifold_edges()[2]\n",
     "\n",
     "# Print the repaired mesh information\n",
-    "print(f\"Volume: {mesh.volume}\" + (\" (WARNING: Shift applied)\" if shift else \"\"))\n",
+    "print(f\"Volume: {mesh.volume}\" + (\" (WARNING: Shift applied)\" if shift.value else \"\"))\n",
     "print(f\"Watertight: {mesh.is_watertight}\")\n",
     "print(f\"Remaining non-manifold edges: {len(remaining_non_manifold_edges)}\")\n",
     "\n",