Update README.md

[melicerte]

Fixes https://github.com/spatie/laravel-csp/issues/86
Replace wrong previous commit

[freekmurze]

Does

php artisan vendor:publish --tag=csp-config

or

php artisan vendor:publish --tag=config-csp

work?

[melicerte]

Sorry, I didn't see you corrected my PR.

What works:
php artisan vendor:publish --provider="Spatie\Csp\CspServiceProvider"
php artisan vendor:publish --tag=csp-config

What does not work:
php artisan vendor:publish --tag=config-csp

So the README is almost correct, except for the '"' at the end of the command.

[freekmurze]

Thank you 👍