Robots.txt

Yesterday, I were spending the whole afternoon to check with this robot.txt which block my sitemap from working.

Under robot.txt analysis, it shown:
user-agent :*
Disallow:/search
sitemap:
http://sisterjj.blogspot.com/feeds/posts/default?orderby=updated

I posted the problem to Google help. I got the reply from the expert refer me to their blog.
http://betabloggerfordummies.blogspot.com/2007/07/blogger-introduces-new-features.html

Actually, the robots.txt file is present, you cannot edit it.

Thank you guy. Otherwise, I don't know I have died how many brain cells.