Add more og:image metadata

templates/article.html

@@ -9,6 +9,9 @@
   <meta content="article" property="og:type">
   <meta content="https://compute.nations.lol/images/logo-z.png" property="og:image">
   <meta content="https://compute.nations.lol/images/logo-z.png" property="twitter:image">
+  <meta property="og:image:width" content="310">
+  <meta property="og:image:height" content="310">
+  <meta property="og:image:alt" content="The Compute logo">
   <meta content="{{published_og}}" property="og:article:published_time">
   <meta content="{{modified_og}}" property="og:article:modified_time">
   {% for author in authors %}
@@ -64,4 +67,4 @@
   <script src="/js/webflow.js" type="text/javascript"></script>
 </body>
 
-</html>
+</html>