Add canonical link

Author: perguth

index.html

@@ -4,6 +4,8 @@
   <meta charset="UTF-8">
   <meta name="viewport" content="width=device-width, initial-scale=1.0">
   <title>Ideas</title>
+  <link rel="canonical" href="https://perguth.de/ideas/">
+
   <style>
     :root {
       --primary-color: #2a4b8d;