Lint documentation files with `markdownlint`

.gitignore

.markdownlintrc

.pre-commit-config.yaml

README.md

docs/contents/implem/configure.md

docs/contents/implem/index.md

docs/contents/workers/ci/index.md

docs/contents/workers/ci/pipeline.svg

docs/contents/workers/create.md

docs/contents/workers/maintenance.md

docs/contents/workers/publication.md

docs/contents/workers/run-local.md

docs/contents/workers/template-structure.md

docs/contents/workers/yaml.md

docs/dev/build_docs.md

docs/index.md

docs/releases.md

pyproject.toml

worker-{{cookiecutter.slug}}/README.md