Add og and twitter tag in 404

Author: Rafnuss

public/404.html

@@ -4,6 +4,26 @@
     <meta charset="utf-8">
     <title>Redirecting…</title>
     <meta name="robots" content="noindex">
+    <link rel="canonical" href="https://raphaelnussbaumer.com/GeoLocatorExplorer/" />
+    <meta property="og:title" content="GeoLocator Explorer" />
+    <meta
+      property="og:description"
+      content="Explore the migration movements of small birds tracked with multi-sensor geolocators and open GeoLocator Data Packages."
+    />
+    <meta property="og:type" content="website" />
+    <meta property="og:url" content="https://raphaelnussbaumer.com/GeoLocatorExplorer/" />
+    <meta property="og:image" content="https://raphaelnussbaumer.com/GeoLocatorExplorer/share.png" />
+    <meta property="og:site_name" content="GeoLocator Explorer" />
+    <meta name="twitter:card" content="summary_large_image" />
+    <meta name="twitter:title" content="GeoLocator Explorer" />
+    <meta
+      name="twitter:description"
+      content="Explore the migration movements of small birds tracked with multi-sensor geolocators and open GeoLocator Data Packages."
+    />
+    <meta
+      name="twitter:image"
+      content="https://raphaelnussbaumer.com/GeoLocatorExplorer/share.png"
+    />
     <script>
       (function () {
         var l = window.location;