diff --git a/outline.md b/outline.md
index bb5716d..b596827 100644
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 * 第3次课：开源开发的支持平台、技术以及参与贡献的过程。（熟悉开源平台和相关参与操作，布置开源任务的选择）OSP-1   10/08
 301：Git实践入门  
-302：GitHub实践入门 
+302：GitHub实践入门    
 303：开源贡献指南：criteria to select open source project and task to participate in; learn how the open source community works; how to make the first contribution.
 
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