og metadata, add preorder link

_data/metadata.js

@@ -1,6 +1,6 @@
 export default {
 	title: "FediZineFest",
 	description: "A zine sharing project for the fediverse",
-	url: "fedizinefest.fyi",
+	url: "https://fedizinefest.fyi",
 	author: "Lee Cattarin",
 };