Fix SEO URL (#481)

src/lib/components/Seo.svelte

@@ -8,7 +8,7 @@
 		'We are a volunteer global network of Svelte fans that strive to promote Svelte and its ecosystem. As a service to the community, this site is a central index of events, a components directory, as well as recipes and other useful resources. Join us or help us out!';
 	export let image =
 		'https://raw.githubusercontent.com/svelte-society/sveltesociety.dev/main/static/images/metatag.png';
-	export let url = `https://${$page.host}${$page.url.pathname}`;
+	export let url = `https://${$page.url.host}${$page.url.pathname}`;
 	export let twitterHandle = '@sveltesociety';
 </script>