update readme

Author: taigw

README.md

@@ -42,7 +42,10 @@ Go to `examples` to see some examples for using PyMIC. For beginners, you only n
 
 # Projects based on PyMIC
 Using PyMIC, it becomes easy to develop deep learning models for different projects, such as the following:
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 1, [COPLE-Net][coplenet] COVID-19 Pneumonia Segmentation from CT images. 
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 2, [Head-Neck-GTV][hn_gtv] Nasopharyngeal Carcinoma (NPC) GTV segmentation from Head and Neck CT images. 
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 [coplenet]:https://github.com/HiLab-git/COPLE-Net
 [hn_gtv]: https://github.com/HiLab-git/Head-Neck-GTV