refactor(examples): enhance update node example

example/src/index.js

@@ -16,7 +16,7 @@ import EdgeTypes from './EdgeTypes';
 import CustomConnectionLine from './CustomConnectionLine';
 import NodeTypeChange from './NodeTypeChange';
 import UpdatableEdge from './UpdatableEdge';
-import UpdateLabel from './UpdateLabel';
+import UpdateNode from './UpdateNode';
 
 import './index.css';
 
@@ -86,9 +86,9 @@ const routes = [
     label: 'Updatable Edge',
   },
   {
-    path: '/update-label',
-    component: UpdateLabel,
-    label: 'Update Label',
+    path: '/update-node',
+    component: UpdateNode,
+    label: 'Update Node',
   },
 ];