Update Nuxt Image FAQ

[P4sca1]

I think the Nuxt Image FAQ (https://nuxt-security.vercel.app/documentation/advanced/faq#using-nonce-with-csp-for-nuxt-image) should be updated. AFAIK, adding a nonce to an image tag doesn't do anything, because nonces are not supported for inline event handlers.
So right now using NuxtImg with strict CSP will always error during SSR, when there is an error loading the image.
See nuxt/image#1011 (comment) for more context.

[Baroshem]

Hey @P4sca1

Thanks for this info! Would you be interested in updating the documentation to match this new state? I can provide all the help needed :)