update og-image

index.html

@@ -23,7 +23,7 @@
 	<meta property="og:description" content="A custom set of semantic styles derived from Terminal Theme for Hugo you always wanted." />
 	<meta property="og:url" content="https://panr.github.io/terminal-css/" />
 	<meta property="og:site_name" content="Terminal.css" />
-	<meta property="og:image" content="./og-image.png">
+	<meta property="og:image" content="https://panr.github.io/terminal-css/og-image.png">
 	<link rel="shortcut icon" href="./favicon.png"">
 	<title>Terminal.css</title>
 	<link href="./terminal.css" rel="stylesheet" />