Update config model type

config.json

@@ -1 +1 @@
-{"model_type": "custom", "model_name": "Custom ResNet GPS Model", "num_classes": 2, "task": "gps_prediction"}
+{"model_type": "vision_model", "model_name": "Custom ResNet GPS Model", "num_classes": 2, "task": "gps_prediction"}