Fix broken og:image and cosmetic fixes for bullet items

Author: marcprux

src/layouts/Default.astro

@@ -39,11 +39,11 @@ const languageEntries = Object.entries(languages);
   <meta name="description" content={description}>
   <meta property="og:title" content={title}>
   <meta property="og:description" content={description}>
-  <meta property="og:image" content="https://keepandroidopen.org/altered-deal.png">
+  <meta property="og:image" content="https://keepandroidopen.org/img/altered-deal.png">
   <meta property="og:type" content="website">
   <meta name="twitter:card" content="summary">
   <meta name="twitter:title" content={title}>
-  <meta name="twitter:image" content="https://keepandroidopen.org/altered-deal.png">
+  <meta name="twitter:image" content="https://keepandroidopen.org/img/altered-deal.png">
   <link rel="me" href="https://techhub.social/@keepandroidopen">
   <link rel="stylesheet" href="https://unpkg.com/@primer/css@21/dist/primer.css">
   <style is:global>
@@ -115,8 +115,8 @@ const languageEntries = Object.entries(languages);
       vertical-align: middle;
       background-repeat: no-repeat;
       background-position: left center;
-      padding-left: 20px;
-      line-height: 1.2;
+      padding-left: 2em;
+      line-height: 1.5;
       content: "➤ ";
     }