how to find the error page

I have the site audit found broken links as below but I can’t find those from my backstage.

Can anyone help?

Thanks in advnace.

http://topwoodfloors.com.au/comments/feed/
HTTP status code: 404, HTML tag: <link href (rel=”alternate”)>
http://topwoodfloors.com.au/feed/atom/
HTTP status code: 404, HTML tag: <link href (rel=”alternate”)>
http://topwoodfloors.com.au/feed/
HTTP status code: 404, HTML tag: <link href (rel=”alternate”)>

my website is http://topwoodfloors.com.au/