Update Tutorial9.ipynb

Author: tigerneil

Tutorial9/Tutorial9.ipynb

@@ -44,7 +44,7 @@
    "source": [
     "dataset = 'Cora'\n",
     "transform = T.Compose([\n",
-    "    T.AddTrainValTestMask('train_rest', num_val=500, num_test=500),\n",
+    "    T.RandomNodeSplit('train_rest', num_val=500, num_test=500),\n",
     "    T.TargetIndegree(),\n",
     "])\n",
     "path = osp.join('data', dataset)\n",