[Graphbolt] Polish. (#6520)

Co-authored-by: Ubuntu <ubuntu@ip-172-31-28-63.ap-northeast-1.compute.internal>

examples/sampling/graphbolt/quickstart/cora/metadata.yaml

@@ -19,31 +19,31 @@ tasks:
     - format: numpy
       in_memory: true
       name: seed_nodes
-      path: train_node.npy
+      path: nodeclassification/train-node.npy
     - format: numpy
       in_memory: true
       name: labels
-      path: train_label.npy
+      path: nodeclassification/train-label.npy
     type_name: null
   validation_set:
   - data:
     - format: numpy
       in_memory: true
       name: seed_nodes
-      path: valid_node.npy
+      path: nodeclassification/valid-node.npy
     - format: numpy
       in_memory: true
       name: labels
-      path: valid_label.npy
+      path: nodeclassification/valid-label.npy
     type_name: null
   test_set:
   - data:
     - format: numpy
       in_memory: true
       name: seed_nodes
-      path: test_node.npy
+      path: nodeclassification/test-node.npy
     - format: numpy
       in_memory: true
       name: labels
-      path: test_label.npy
+      path: nodeclassification/test-label.npy
     type_name: null

tests/examples/test_sampling_examples.py

@@ -13,8 +13,8 @@ EXAMPLE_ROOT = os.path.join(
 )
 
 
-def test_gcn():
-    script = os.path.join(EXAMPLE_ROOT, "gcn.py")
+def test_node_classification():
+    script = os.path.join(EXAMPLE_ROOT, "node_classification.py")
     out = subprocess.run(["python", str(script)], capture_output=True)
     assert out.returncode == 0
     stdout = out.stdout.decode("utf-8")