Update index.html

Change this

<base href="/">
To this

<base href="./">

index.html

@@ -14,7 +14,7 @@
     This is a placeholder for base href that will be replaced by the value of
     the `--base-href` argument provided to `flutter build`.
   -->
-  <base href="/">
+  <base href="./">
 
   <meta charset="UTF-8">
   <meta content="IE=Edge" http-equiv="X-UA-Compatible">