Drop duplicate search results (download-directory#137)

Author: fregante

index.html

@@ -5,6 +5,7 @@
 	<link rel="stylesheet" href="index.css">
 	<script src="index.ts" type="module"></script>
 	<link rel="preconnect" href="https://fonts.gstatic.com"/>
+	<link rel="canonical" href="https://download-directory.github.io/"/>
 	<link rel="preload" href="https://fonts.googleapis.com/css2?family=Roboto&family=Roboto+Slab:wght@300&display=swap" as="style"/>
 	<link rel="stylesheet" href="https://fonts.googleapis.com/css2?family=Roboto&family=Roboto+Slab:wght@300&display=swap" media="print" onload="this.media='all'"/>
 	<meta name="viewport" content="width=device-width,initial-scale=1">