Invalid go package URLs.

[xiahualiu-txg]

These URLs are broken:

https://github.com/bazel-contrib/rules_go/blob/76e2cb9305461a2e7fbabc3946c97a4a1b2c54ae/go/private/repositories.bzl#L70C14-L70C94

https://github.com/bazel-contrib/rules_go/blob/76e2cb9305461a2e7fbabc3946c97a4a1b2c54ae/go/private/repositories.bzl#L268C14-L268C128

They are both 404.