Add favicon in Kubespray website (#11512)

index.html

@@ -6,6 +6,7 @@
   <meta name="description" content="Deploy a Production Ready Kubernetes Cluster">
   <meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
   <link rel="stylesheet" href="//unpkg.com/docsify-themeable/dist/css/theme-simple.css">
+  <link rel="icon" href="/logo/logo-clear.png" type="image/png" />
   <style>
     :root {
       --base-font-size: 16px;