Update README.md

PPOCRLabel/README.md

@@ -9,7 +9,7 @@ PPOCRLabel is a semi-automatic graphic annotation tool suitable for OCR field, w
 ### Recent Update
 
 - 2022.02：（by [PeterH0323](https://github.com/peterh0323) ）
-  - Added KIE mode, for [detection + identification + keyword extraction] labeling.
+  - Add KIE Mode by using `--kie`, for [detection + identification + keyword extraction] labeling.
 - 2022.01：（by [PeterH0323](https://github.com/peterh0323) ）
   - Improve user experience: prompt for the number of files and labels, optimize interaction, and fix bugs such as only use CPU when inference
 - 2021.11.17: