Merge pull request #587 from typelevel/issue/586

Add meta og tags

Author: armanbilge

src/img/logo.png

@@ -9,10 +9,14 @@
   <link rel="icon" href="@:target(/img/favicon.svg)" type="image/svg+xml">
   <link rel="apple-touch-icon" href="@:target(/img/apple-touch-icon.png)">
 
+  <meta property="og:title" content="${cursor.currentDocument.title}" />
+  <meta property="og:image" content="@:target(/img/logo.png)" />
+
   <link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Fira+Mono:500">
 
   @:if(katex)
-  <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/katex@0.16.28/dist/katex.min.css" integrity="sha384-Wsr4Nh3yrvMf2KCebJchRJoVo1gTU6kcP05uRSh5NV3sj9+a8IomuJoQzf3sMq4T" crossorigin="anonymous">
+  <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/katex@0.16.28/dist/katex.min.css"
+    integrity="sha384-Wsr4Nh3yrvMf2KCebJchRJoVo1gTU6kcP05uRSh5NV3sj9+a8IomuJoQzf3sMq4T" crossorigin="anonymous">
   @:@
 
   <link rel="stylesheet" href="@:target(/main.css)">