refactor react-router -> react-router-dom

Signed-off-by: Patrik Oldsberg <poldsberg@gmail.com>

plugins/todo/package.json

@@ -42,7 +42,7 @@
   },
   "peerDependencies": {
     "react": "^16.13.1 || ^17.0.0",
-    "react-router": "6.0.0-beta.0 || ^6.3.0"
+    "react-router-dom": "6.0.0-beta.0 || ^6.3.0"
   },
   "devDependencies": {
     "@backstage/cli": "workspace:^",

plugins/todo/src/plugin.test.tsx

@@ -15,7 +15,7 @@
  */
 
 import React from 'react';
-import { Route, Routes } from 'react-router';
+import { Route, Routes } from 'react-router-dom';
 import { renderInTestApp, TestApiProvider } from '@backstage/test-utils';
 import { todoPlugin, EntityTodoContent } from './plugin';
 import { todoApiRef } from './api';