[Feature] Update note

tools/spliter.py

@@ -44,11 +44,11 @@ parser = argparse.ArgumentParser(description="input parameters")
 parser.add_argument("--image_path", type=str, required=True, \
                     help="The path of big image data.")
 parser.add_argument("--block_size", type=int, default=512, \
-                    help="The size of image block.")
+                    help="The size of image block, `512` is the default.")
 parser.add_argument("--save_folder", type=str, default="output", \
                     help="The folder path to save the results, `output` is the default.")
 
 
 if __name__ == "__main__":
     args = parser.parse_args()
-    split_data(args.image_path, args.block_size, args.save_folder)
+    split_data(args.image_path, args.block_size, args.save_folder)