Update HEAD tag

Updates HEAD so that there is the Discord Embed so that when the URLs are used on Discord it shows all of the relevant data in an embed.

Signed-off-by: Mitsuo Makuda <mitsuo_makuda@bdsmhypnosisbasement.com>

www/template.html

@@ -73,6 +73,15 @@
         <link rel="stylesheet" href="https://cdn.bdsmhypnosisbasement.com/css/prism.css">
         <!-- \External CSS\ -->
 
+        <!-- /Discord Embed/ -->
+        <meta property="og:url"         content="https://www.bdsmhypnosisbasement.com/">
+        <meta property="og:title"       content="Page Name">
+        <meta property="og:description" content="Page Description">
+        <meta property="og:image"       content="https://cdn.bdsmhypnosisbasement.com/img/embed/Page Name.png">
+        <meta name="twitter:card"       content="summary_large_image">
+        <meta name="theme-color"        content="#663399" data-react-helmet="true">
+        <!-- \Discord Embed\ -->
+
     </head>
     <!-- \HEAD\ -->