[Release] Source archive includes "-rcX"

[kou]

https://downloads.apache.org/arrow/apache-arrow-adbc-0.1.0/apache-arrow-adbc-0.1.0.tar.gz includes -rc6 in top-level directory name:

$ tar tf apache-arrow-adbc-0.1.0.tar.gz | head
apache-arrow-adbc-0.1.0-rc6/
apache-arrow-adbc-0.1.0-rc6/.asf.yaml
apache-arrow-adbc-0.1.0-rc6/adbc.h
apache-arrow-adbc-0.1.0-rc6/.isort.cfg
apache-arrow-adbc-0.1.0-rc6/.flake8
apache-arrow-adbc-0.1.0-rc6/go/
apache-arrow-adbc-0.1.0-rc6/.cmake-format
apache-arrow-adbc-0.1.0-rc6/CHANGELOG.md
apache-arrow-adbc-0.1.0-rc6/python/
apache-arrow-adbc-0.1.0-rc6/.pre-commit-config.yaml

It should be apache-arrow-adb-0.1.0 (no -rc6).

[kou]

It seems that #292 solved this.