fix mixed content warning

sindresorhus · sindresorhus · commit 0b9696ef29fb · 2015-11-13T22:12:04.000+07:00
diff --git a/index.html b/index.html
@@ -6,7 +6,7 @@
 		<meta name="author" content="Sindre Sorhus">
 		<meta name="viewport" content="width=device-width">
 		<title>devtools-detect • Detect if DevTools is open</title>
-		<link rel="stylesheet" href="http://netdna.bootstrapcdn.com/twitter-bootstrap/2.3.2/css/bootstrap-combined.min.css">
+		<link rel="stylesheet" href="https://netdna.bootstrapcdn.com/twitter-bootstrap/2.3.2/css/bootstrap-combined.min.css">
 		<style>
 			html,
 			body {
