minor fix

Author: hxzd5568

graph_net/paddle/validate.py

@@ -106,5 +106,12 @@ def main(args):
         default=False,
         help="Dump graph hash key",
     )
+    parser.add_argument(
+        "--graph-net-samples-path",
+        type=str,
+        required=False,
+        default=None,
+        help="Path to GraphNet samples folder. e.g '../../samples'",
+    )
     args = parser.parse_args()
     main(args=args)