fixed mixed http/https for font url

Author: jpwesselink

Diff for: community-groups.html

@@ -5,7 +5,7 @@
     <link rel="stylesheet" href="/style.css">
     <link rel="stylesheet" href="/community-groups.css">
     <link rel="shortcut icon" href="/favicon.ico">
-    <link href="http://fonts.googleapis.com/css?family=Source+Sans+Pro:400,700|Source+Code+Pro" rel="stylesheet" type="text/css">
+    <link href="//fonts.googleapis.com/css?family=Source+Sans+Pro:400,700|Source+Code+Pro" rel="stylesheet" type="text/css">
     <link rel="stylesheet" href="/mapbox.css">
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
     <title>NodeSchool - Chapters</title>