docs: fix broken link in Architecture/Turbopack documentation (#71412)
This PR fixes a broken link (404 Not Found) in the
[Architecture/Turbopack](https://nextjs.org/docs/architecture/turbopack)
documentation.
It appears the actual URL differs from the expected one, so I have
corrected it to the expected URL.
expected URL :
https://nextjs.org/docs/canary/architecture/nextjs-compiler#supported-features
actual URL :
https://nextjs.org/docs/canary/architecture/docs/canary/architecture/nextjs-compiler#supported-features

Co-authored-by: JJ Kasper <jj@jjsweb.site>