Update commands.md (#2368)

npm start does not start ngrok tunnel. PR to update docs accordingly

## React Boilerplate

Thank you for contributing! Please take a moment to review our [**contributing guidelines**](https://github.com/react-boilerplate/react-boilerplate/blob/master/.github/CONTRIBUTING.md)
to make the process easy and effective for everyone involved.

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Before opening a pull request, please ensure:

- [x] You have followed our [**contributing guidelines**](https://github.com/react-boilerplate/react-boilerplate/blob/master/.github/CONTRIBUTING.md)
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Author: diwakar-s-maurya

docs/general/commands.md

@@ -53,8 +53,7 @@ npm start
 ```
 
 Starts the development server and makes your application accessible at
-`localhost:3000`. Tunnels that server with `ngrok`, which means the website
-accessible anywhere! Changes in the application code will be hot-reloaded.
+`localhost:3000`. Changes in the application code will be hot-reloaded.
 
 ### Production