Rename RSSlink to RSSLink

The former will be deprecated and eventually removed from Hugo.

Note: Currently both of them exist in Hugo, which is the reason for the cleanup.

Author: bep

layouts/partials/head.html

@@ -70,7 +70,7 @@
     {{ end }}
     <script src="{{ .Site.BaseURL }}javascripts/modernizr.js"></script>
 
-    {{ with .RSSlink }}
+    {{ with .RSSLink }}
     <link href="{{ . }}" rel="alternate" type="application/rss+xml" title="{{ $.Site.Title }}" />
     <link href="{{ . }}" rel="feed" type="application/rss+xml" title="{{ $.Site.Title }}" />
     {{ end }}