Update README.md

Author: multitalk

README.md

@@ -11,7 +11,7 @@ To addresses this challenge, we developed a pre-trained cell-type annotation met
 
 [![scipy-1.3.1](https://img.shields.io/badge/scipy-1.3.1-yellowgreen)](https://github.com/scipy/scipy) [![torch-1.4.0](https://img.shields.io/badge/torch-1.4.0-orange)](https://github.com/pytorch/pytorch) [![numpy-1.17.2](https://img.shields.io/badge/numpy-1.17.2-red)](https://github.com/numpy/numpy) [![pandas-0.25.1](https://img.shields.io/badge/pandas-0.25.1-lightgrey)](https://github.com/pandas-dev/pandas) [![dgl-0.4.3](https://img.shields.io/badge/dgl-0.4.3-blue)](https://github.com/dmlc/dgl) [![scikit__learn-0.22.2](https://img.shields.io/badge/scikit__learn-0.22.2-green)](https://github.com/scikit-learn/scikit-learn) [![xlrd-1.2.0](https://img.shields.io/badge/xlrd-1.2.0-yellow)](https://github.com/python-excel/xlrd)
 
-Download [`scDeepSort-v1.0-cu102.tar.gz`]() from the [release](https://github.com/ZJUFanLab/scDeepSort/releases) page and execute the following command:
+Download [`scDeepSort-v1.0-cu102.tar.gz`](https://github.com/ZJUFanLab/scDeepSort/releases) from the [release](https://github.com/ZJUFanLab/scDeepSort/releases) page and execute the following command:
 ```
 pip install scDeepSort-v1.0-cu102.tar.gz
 ```