fix a bug
@ -98,7 +98,8 @@ Docs
====
* [English](https://github.com/sjwhitworth/golearn/wiki)
* [中文文档](doc/zh/Home.md)
* [中文文档(简体)](doc/zh_CN/Home.md)
* [中文文档(繁体)](doc/zh_TW/Home.md)
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