message: Added import for the packages/backend/src/index.ts file for adding the plugin and changed the file extension from js to ts
diff: @@ -12,7 +12,7 @@ yarn add @backstage/plugin-kafka @backstage/plugin-kafka-backend
  2. Add the plugin backend:
  -In a new file named `kafka.js` under `backend/src/plugins`:
  +In a new file named `kafka.ts` under `backend/src/plugins`:
  ```js
  import { createRouter } from '@backstage/plugin-kafka-backend';
  @@ -29,6 +29,9 @@ export default async function createPlugin({
  And then add to `packages/backend/src/index.ts`:
  ```js
  +// ...
  +import kafka from './plugins/kafka';
  +// ...
  async function main() {
  // ...
  const kafkaEnv = useHotMemoize(module, () => createEnv('kafka'));
  