fix typo

website/themes/uppy/layout/example.ejs

@@ -36,7 +36,7 @@
         }
 
         container.value += text + '\n';
-        container.scrollTop = container.scrollHeight + '\n';
+        container.scrollTop = container.scrollHeight;
       };
     }(console.log.bind(console), document.getElementById("console-log")));
   </script>