Update docs to fix running the app

[praisethemoon]

Hello!

I came from the docs here https://react.nodegui.org/docs/guides/getting-started#hello-world

Which says to run npm install and then npm start after clonign the repo, which does not work, as the readme here asks to run npm run dev instead.

I think updating the docs would be a good idea, cheers!

[praisethemoon]

Oh, turns out npm start also works, but only after running npm run dev, at least for me. Feel free to close the issue if I am wrong.

[a7ul]

No you are right @praisethemoon
I had updated the started few hours ago and forgot to update the docs. Thanks for pointing out :)

Make sure you run both npm run dev and npm start on seperate terminal tabs or windows.