Feed Not Validating

HI-
I am really new at this as I am trying to use Feedburner to send email subscribers updates to my blog.
I can’t seem to get it to validate. I am getting this error message:
line 11, column 7: link must be a full and valid URL: [help]

<link></link>
^

I understand I need to add my website somewhere but where and how do I get to it?
Thank you so much for your help!
Jen