Patch 9725 Email templates of chinese simplified (Andy Wu)

git-svn-id: http://redmine.rubyforge.org/svn/trunk@413 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/views/mailer/document_add_zh.rhtml

@@ -1,4 +1,4 @@
-A document has been added to <%= @document.project.name %> (<%= @document.category.name %>):
+有一个文档已被加入到项目中 <%= @document.project.name %> (<%= @document.category.name %>):
 <%= l(:field_title) %>: <%= @document.title %>
 
 http://<%= Setting.host_name %>/documents/show/<%= @document.id %>