Fixing unscrible link

app/views/comment_mailer/born.html.slim

@@ -1,12 +1,12 @@
 p
   | 你的博客有新的评论:
 p
-  span 来自: 
+  span 来自:
   = mail_to @comment.email, @comment.name
-p 评论内容: 
+p 评论内容:
 pre
   | #{@comment.content}
 
-p 
-  | 博客链接: 
+p
+  | 博客链接:
   = link_to @comment.post.title, blog_url(@comment.post)

app/views/comment_mailer/reply.html.slim

@@ -1,11 +1,11 @@
 p 你评论过的博客有新的回复:
-
 p 评论人: #{@comment.name}
-
-p 评论内容: 
-
+p 评论内容:
 pre #{@comment.content}
-
 p
-  | 被评论博客: 
+  | 被评论博客:
   = link_to @comment.post.title, blog_url(@comment.post)
+hr
+p
+  | 退订:
+  = link_to unsubscribes_url, unsubscribes_url

app/views/comment_mailer/reply.text.erb

@@ -7,3 +7,5 @@
 被评论博客: <%= @comment.post.title %>
 
 访问这里回复: <%= blog_url(@comment.post) %>
+
+退订: <%= unsubscribes_url %>