Fix feed URL

Author: kynan

_includes/head.html

@@ -5,5 +5,5 @@
 <link href='https://fonts.googleapis.com/css?family=Source+Code+Pro:500,600' rel='stylesheet' type='text/css'>
 <link rel="stylesheet" href="{{ site.baseurl | replace: '//', '/' }}/css/main.css">
 <link rel="stylesheet" id="switch_style" href="{{ site.baseurl | replace: '//', '/' }}/css/grid.css">
-<link rel="alternate" type="application/rss+xml" title="{{ site.name }}" href="{{ site.baseurl | prepend: site.url | replace: '//', '/' }}/feed.xml">
+<link rel="alternate" type="application/rss+xml" title="{{ site.name }}" href="{{ site.baseurl | replace: '//', '/' }}/feed.xml">
 <link href='{{ site.media_folder | prepend: site.baseurl | replace: '//', '/' }}/pydata.png' rel='shortcut icon' type='image/png' />