update readme

Author: zsdonghao

README.md

@@ -223,7 +223,7 @@ TensorLayer started as an internal repository at Imperial College London, helpin
  -->
 
 - 🇬🇧 If you are in London, we can discuss in person. Drop us an email to organize a meetup: [email protected].
-- 🇨🇳 我们有官方的 [中文文档](http://tensorlayercn.readthedocs.io/zh/latest)。另外, 我们建立了多种交流渠道，如[QQ群](img/img_qq.png)和[微信群](https://github.com/shorxp/tensorlayer-chinese/blob/master/docs/wechat_group.md).
+- 🇨🇳 我们有官方的 [中文文档](http://tensorlayercn.readthedocs.io/zh/latest), 另外, 我们建立了多种交流渠道, 如[QQ群](img/img_qq.png)和[微信群](https://github.com/shorxp/tensorlayer-chinese/blob/master/docs/wechat_group.md).
 
 # Citation
 If you find it is useful, please cite our paper in your project and paper.