add additional sentence To run hyper

[blackhands77]

5. To run hyper
   • yarn run app from another terminal tab/window/pane
   • If you are using Visual Studio Code, select Launch Hyper in debugger configuration to launch a new Hyper instance with debugger attached.
     *** If you interrupt yarn run dev, you'll need to relaunch it each time you want to test something. Webpack will watch changes and will rebuild renderer code when needed (and only what have changed). You'll just have to relaunch electron by using yarn run app or VSCode launch task.**

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add additional sentence why you don't need to interrupt yarn run app.
Collaborator chabou advice me to change this, but you mean this is right?
If it isn't right, I'm very sorry.

[chabou]

Thank you for your help 🙏
Sorry for the delay 😞