Update testdata.py

testdata.py

@@ -128,7 +128,7 @@ class TestData(datasets.GeneratorBasedBuilder):
                     if cls == 0:
                         faces.append([x1, y1, x2, y2])
                     else:
-                        plates([x1, y1, x2, y2])
+                        plates.append([x1, y1, x2, y2])
             
             yield idx, {"image": i_file, "faces": faces, "plates": plates}