Update Objects365.yaml val count (#5212)

data/Objects365.yaml

@@ -10,7 +10,7 @@
 # Train/val/test sets as 1) dir: path/to/imgs, 2) file: path/to/imgs.txt, or 3) list: [path/to/imgs1, path/to/imgs2, ..]
 path: ../datasets/Objects365  # dataset root dir
 train: images/train  # train images (relative to 'path') 1742289 images
-val: images/val # val images (relative to 'path') 5570 images
+val: images/val # val images (relative to 'path') 80000 images
 test:  # test images (optional)
 
 # Classes