update head.html

gitcdn.xyz was slowing down the website loading in NA - changed it to gitcdn.link

alshedivat/al-folio#234

_includes/head.html

@@ -34,7 +34,14 @@
 <link rel="stylesheet" type="text/css" href="https://fonts.googleapis.com/css?family=Roboto:300,400,500,700|Roboto+Slab:100,300,400,500,700|Material+Icons">
 
 <!-- Code Syntax Highlighting -->
-<link rel="stylesheet" href="https://gitcdn.xyz/repo/jwarby/jekyll-pygments-themes/master/{{ site.highlight_theme }}.css" />
+
+<!-- 
+18th Sept 2021 Changing the "gitcdn.xyz" to "gitcdn.link" to shave off loading times. As seen in Issue 
+https://github.com/alshedivat/al-folio/pull/234
+--> 
+
+<link rel="stylesheet" href="https://gitcdn.link/repo/jwarby/jekyll-pygments-themes/master/{{ site.highlight_theme }}.css" />
+
 
 <!-- Styles -->
 {% if site.icon != empty %}