🐛 FIX: use prod package in example

Author: pettiboy

demo-app/package-lock.json

@@ -14,6 +14,7 @@
     "react": "^17.0.2",
     "react-dom": "^17.0.2",
     "react-scripts": "4.0.3",
+    "react-ui-scrollspy": "^2.0.0",
     "typescript": "^4.4.4",
     "web-vitals": "^1.1.2"
   },

demo-app/package.json

@@ -1,9 +1,6 @@
 import Center from "./components/Center/Center";
 import Navigation from "./components/Navigation/Navigation";
-// eslint-disable-next-line
-// import ScrollSpy from "react-ui-scrollspy";
-// eslint-disable-next-line
-import ScrollSpy from "./components/src";
+import ScrollSpy from "react-ui-scrollspy";
 
 function App() {
   return (