Update coco_instance.py

Author: bollossom

SDT_V3/Detection/configs/_base_/datasets/coco_instance.py

@@ -1,6 +1,6 @@
 # dataset settings
 dataset_type = 'CocoDataset'
-data_root = '/public/liguoqi/coco_yolo/'
+data_root = '../coco_yolo/'
 
 # Example to use different file client
 # Method 1: simply set the data root and let the file I/O module