Fix some HTML validation errors

config/plugins/og-image.js

@@ -13,5 +13,6 @@ module.exports = function (eleventyConfig) {
 			},
 			],
 		},
+		generateHTML: (outputUrl) => `<meta property="og:image" content="${outputUrl}">`
 	});
 }

src/_includes/base.njk

@@ -29,7 +29,7 @@
 		<link rel="me" href="https://social.lol/@lewis">
 		<link rel="me" href="https://github.com/LewisDaleUK">
 
-		<link rel="webmention" href="https://webmention.io/lewisdale.dev/webmention" />
+		<link rel="webmention" href="https://webmention.io/lewisdale.dev/webmention">
 		<meta name="viewport" content="width=device-width, initial-scale=1">
 		<meta name="generator" content="eleventy">