Add link to @bazel/worker in persistent-workers.md
Add link to @bazel/worker in persistent-workers.md

This should help people find this useful package.

Closes #12450.

PiperOrigin-RevId: 342644134

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