Update in_app_localhost_server.dart

lib/src/in_app_localhost_server.dart

@@ -45,7 +45,7 @@ class InAppLocalhostServer {
           var body = List<int>();
           var path = request.requestedUri.path;
           path = (path.startsWith('/')) ? path.substring(1) : path;
-          path += (path.endsWith('/')) ? 't-rex.html' : '';
+          path += (path.endsWith('/')) ? 'index.html' : '';
 
           try {
             body = (await rootBundle.load(path))
@@ -85,4 +85,4 @@ class InAppLocalhostServer {
     }
   }
 
-}
\ No newline at end of file
+}