fix example predict call arguments save_name_format

ReadME.md

@@ -47,7 +47,7 @@ Results will be saved under `test_results` by default
             - VLA
                 - VLA_img_ED.nii.gz               
 - e.g.
-    -    predict LVSA: `python predict.py --sequence LVSA --root_dir 'test_data/' --image_format 'LVSA/LVSA_img_{}.nii.gz' --save_folder_path 'test_results/' --save_format_name 'seg_sa_{}.nii.gz' ` 
+    -    predict LVSA: `python predict.py --sequence LVSA --root_dir 'test_data/' --image_format 'LVSA/LVSA_img_{}.nii.gz' --save_folder_path 'test_results/' --save_name_format 'seg_sa_{}.nii.gz' ` 
 
 - please read predict.py for avanced settings (batch size, image resampling).