[BUG]: Build instructions in CONTRIBUTING.md are imperfect

[Nix-da]

What is the bug?
Two commands in the building instructions are wrong:

Under the headline "Working in this repo" -> "steps to contribute" -> "5." is currently:
Run npm useChrome or npm useFF to select the browser you are developing for - this will copy the corresponding manifest.json

but has to be:
Run npm run useChrome or npm run useFF to select the browser you are developing for - this will copy the corresponding manifest.json

Also both scripts are not working on windows. This may also be worth a hint.

[C0ntroller]

Fixed by #132
Will be merged into main with next release.

[OliEfr]

What is the bug? Two commands in the building instructions are wrong:

Under the headline "Working in this repo" -> "steps to contribute" -> "5." is currently: Run npm useChrome or npm useFF to select the browser you are developing for - this will copy the corresponding manifest.json

but has to be: Run npm run useChrome or npm run useFF to select the browser you are developing for - this will copy the corresponding manifest.json

Also both scripts are not working on windows. This may also be worth a hint.

Thanks @Nix-da For being attentive and reporting anyway :)