syscall: update broken links
syscall: update broken links

Remove one link which isn't very interesting, and update another to
point to the current location.

Fixes #52753

Change-Id: I5f53ede35b0ded197bc0e6d41eabf28d736de5b8
Reviewed-on: https://go-review.googlesource.com/c/go/+/405296
Run-TryBot: Ian Lance Taylor <87e9c6d529889242b7e184afb632328636553ab4@golang.org>
Reviewed-by: Heschi Kreinick <e89ab2b172855aa0ad01c40c4d8a3535a61ac68a@google.com>
TryBot-Result: Gopher Robot <66cb808b70d30c07676d5e946fee83fd561249e5@golang.org>
Reviewed-by: Hajime Hoshi <1c55649263e1aefbe86bfa40d3d8351033a4d83f@gmail.com>
Reviewed-by: Michael Knyszek <4473450dc5c88f06e1fb787f303d7805ec2aee65@google.com>

nawawi/go,nawawi/go,golang/go,golang/go,golang/go,nawawi/go,golang/go,nawawi/go,nawawi/go,nawawi/go,nawawi/go,golang/go,golang/go,nawawi/go,golang/go,golang/go