add twitter card og tag

Author: SvanBoxel

index.html

@@ -19,6 +19,7 @@
     <meta property="og:site_name" content="Squaremeter.amsterdam" />
     <meta property="og:image" content="https://squaremeter.amsterdam/assets/img/meta/og_image.jpg" />
     <meta name="twitter:card" content="summary">
+    <meta name="twitter:image" content="https://squaremeter.amsterdam/assets/img/meta/og_image.jpg" />
 
     <link rel="preload" href="./assets/img/stroopwafel.png" as="image">
     <link rel="preload" href="./assets/img/kroket.png" as="image">