Accelerated Python Tutorial: Fix typo in cuda-cccl notebook.

Author: brycelelbach

tutorials/accelerated-python/notebooks/libraries/23__cuda_cccl__customizing_algorithms.ipynb

@@ -490,11 +490,11 @@
     "\n",
     "# Verify with NumPy\n",
     "np_inclusive = np.cumsum(d_input.get())\n",
-    "np_exclusive = np.concatenate([[0], np_cumsum[:-1]])\n",
+    "np_exclusive = np.concatenate([[0], np_inclusive[:-1]])\n",
     "np.testing.assert_allclose(d_inclusive.get(), np_inclusive)\n",
     "np.testing.assert_allclose(d_exclusive.get(), np_exclusive)\n",
-    "print(f\"NumPy inclusive:    {np_result}\")\n",
-    "print(f\"NumPy exclusive:    {np_result}\")"
+    "print(f\"NumPy inclusive:    {np_inclusive}\")\n",
+    "print(f\"NumPy exclusive:    {np_exclusive}\")"
    ]
   },
   {