Extend the Starlark style guide guidance wrt macros to also cover variables.
Extend the Starlark style guide guidance wrt macros to also cover variables.

PiperOrigin-RevId: 317149780

ulfjack/bazel,davidzchen/bazel,katre/bazel,perezd/bazel,perezd/bazel,cushon/bazel,meteorcloudy/bazel,ButterflyNetwork/bazel,katre/bazel,bazelbuild/bazel,twitter-forks/bazel,ulfjack/bazel,ButterflyNetwork/bazel,ButterflyNetwork/bazel,twitter-forks/bazel,twitter-forks/bazel,katre/bazel,davidzchen/bazel,ButterflyNetwork/bazel,bazelbuild/bazel,perezd/bazel,twitter-forks/bazel,davidzchen/bazel,ButterflyNetwork/bazel,meteorcloudy/bazel,twitter-forks/bazel,werkt/bazel,werkt/bazel,perezd/bazel,ulfjack/bazel,safarmer/bazel,ButterflyNetwork/bazel,safarmer/bazel,davidzchen/bazel,bazelbuild/bazel,meteorcloudy/bazel,bazelbuild/bazel,bazelbuild/bazel,ulfjack/bazel,meteorcloudy/bazel,katre/bazel,cushon/bazel,meteorcloudy/bazel,ulfjack/bazel,meteorcloudy/bazel,werkt/bazel,cushon/bazel,katre/bazel,bazelbuild/bazel,safarmer/bazel,davidzchen/bazel,ulfjack/bazel,safarmer/bazel,perezd/bazel,werkt/bazel,cushon/bazel,twitter-forks/bazel,cushon/bazel,werkt/bazel,katre/bazel,werkt/bazel,safarmer/bazel,ulfjack/bazel,perezd/bazel,davidzchen/bazel,meteorcloudy/bazel,cushon/bazel,perezd/bazel,davidzchen/bazel,twitter-forks/bazel,safarmer/bazel