Update app.js

Author: xaymup

app.js

@@ -295,7 +295,7 @@ async function createPlaylist(userId, name) {
         },
         body: JSON.stringify({
             name: name,
-            description: "Generated using xaymup.me/djset-generator",
+            description: "Generated using https://xaymup.me/djset-generator",
             public: false
         })
     });