diff --git a/docs/guide/introduction.md b/docs/guide/introduction.md
index d04f0854..e0fe015b 100644
--- a/docs/guide/introduction.md
+++ b/docs/guide/introduction.md
@@ -36,4 +36,4 @@ Hexo has been serving the Vue 2.x docs well. The biggest problem is that its the
 
 ### GitBook
 
-We’ve been using GitBook for most of our sub project docs. The primary problem with GitBook is that its development reload performance is intolerable with a large amount of files. The default theme also has a pretty limiting navigation structure, and the theming system is, again, not Vue based. The team behind GitBook is also more focused on turning it into a commercial product rather than an open-source tool.
+We’ve been using GitBook for most of our subproject documentation. However, the primary problem with GitBook is that its development reload performance is intolerable with a large amount of files. The default theme also has a pretty limiting navigation structure, and the theming system is, again, not Vue based. The team behind GitBook is also more focused on turning it into a commercial product rather than an open-source tool.