dirstate-v2: fix confusion between requirement and format config variable
None of those outputs failed on the CI because dirstate-v2 is not fully tested
yet. This also updates the documentation.
Differential Revision: https://phab.mercurial-scm.org/D11746
[build-system]
requires = ["setuptools", "wheel"]
[tool.black]
line-length = 80
exclude = '''
build/
| wheelhouse/
| dist/
| packages/
| \.hg/
| \.mypy_cache/
| \.venv/
| mercurial/thirdparty/
'''
skip-string-normalization = true
quiet = true