fix: update instruction for next.js

[multivoltage]

Tested on my personal project on github

[tschaub]

Thanks, @multivoltage

[multivoltage]

@tschaub I don't hot to send you a message so I use this space:
I tried to navigate in you site https://tschaub.net/ but is completly blank.
Also the same site in linkedin is in http version.
Only to notify you. When you send me a "pong" I will delete this :)