x/pkgsite: log.Fatal description is inaccurate

[ShyLionTjmn]

What is the URL of the page with the issue?

https://pkg.go.dev/log#Fatal

Description says that:

Fatal is equivalent to Print() followed by a call to os.Exit(1).

But it is not. Print prints to stdout, when Fatal prints to stderr:

std.Output(2, fmt.Sprint(v...))

[seankhliao]

Print goes to stderr too