fix(vibrant theme): add favicon to vibrant theme as all page requires

Author: andatoshiki

src/components/themes/vibrant/index.html

@@ -24,6 +24,7 @@
 			rel="stylesheet"
 			href="https://jsd.toshiki.dev/gh/andatoshiki/toshiki-cdn@master/fa6pro/css/all.min.css"
 		/>
+        <link rel="shortcut icon" href="https://r2.toshiki.dev/favicon.ico" type="image/x-icon" />
 		<title>Fuki 不期 | Your lovely URL shortener</title>
 		<style>
 			* {