Fix quotes

Author: bact

themes/hugo-material/layouts/partials/head.html

@@ -29,7 +29,7 @@
   {{ end }}
 
   {{ with .OutputFormats.Get "RSS" }}
-  <link rel="alternate" type="application/rss+xml" title="{{ printf '%s RSS feed' $.Site.Title }}" href="{{ .RelPermalink }}" />
+  <link rel="alternate" type="application/rss+xml" title='{{ printf "%s RSS feed" $.Site.Title }}' href="{{ .RelPermalink }}" />
   {{ end }}
   <link rel="canonical" href="{{ .Permalink }}">
 </head>