Fix netlify contact form

[KilianZimmerer]

Netlify Forms does not receive the contact form input after submission.

[jakobkolb]

Seems to be an issue with nextjs and its handling of netlify forms - see here

[KilianZimmerer]

Did you already look through this? As a first try I would adapt all attributes as shown there:

https://simplernerd.com/nextjs-netlify-form/

[jakobkolb]

I've remembered that I ran into this before. I think I can handle it.