fix og url

_includes/head.njk

@@ -15,7 +15,7 @@
 	<meta name="robots" content="index,follow" />
 	<meta property="og:title" content="{{ pageTitle }}" />
 	<meta property="og:type" content="article" />
-	<meta property="og:url" content="/" />
+	<meta property="og:url" content="{{ metadata.url }}{{ page.url }}" />
 	<meta property="og:description" content="{{ metadata.description }}" />
 
 	{#