Changed title

Author: shenrunzhang

public/index.html

@@ -24,7 +24,7 @@
       work correctly both with client-side routing and a non-root public URL.
       Learn how to configure a non-root public URL by running `npm run build`.
     -->
-    <title>React App</title>
+    <title>RouterArena</title>
   </head>
   <script async src="https://www.googletagmanager.com/gtag/js?id=G-CFZYZLHP5X"></script>
 <script>