update images link
<a name="multilingual"></a>
## (multilingual)_ppocr_mobile_2.0
<div align="center">
- <img src="./doc/imgs_results/french_0.jpg" width="800">
- <img src="./doc/imgs_results/korean.jpg" width="800">
+ <img src="../imgs_results/french_0.jpg" width="800">
+ <img src="../imgs_results/korean.jpg" width="800">
</div>
