docs: Update contributing docs to refer to ruff format

.github/workflows/python-code-quality.yml

@@ -48,7 +48,6 @@ jobs:
           echo OS: ${{ matrix.os }}
           echo Python: ${{ env.PYTHON_VERSION }}
           echo Minimal Python version: ${{ env.MIN_PYTHON_VERSION }}
-          echo Black: ${{ env.BLACK_VERSION }}
           echo Flake8: ${{ env.FLAKE8_VERSION }}
           echo Pylint: ${{ env.PYLINT_VERSION }}
           echo Bandit: ${{ env.BANDIT_VERSION }}

CONTRIBUTING.md

@@ -32,9 +32,9 @@ and try again. If you are not sure what to do, let others know in a pull
 request comment.
 
 Note that there are some steps you can do locally to improve your code.
-For Python, run `black .` to apply standardized formatting. You can
-also run linter tools such as Pylint which will suggest different improvements
-to your code.
+For Python, run `ruff format` to apply standardized formatting. You can
+also run linter tools such as `ruff check` or Pylint which will suggest
+different improvements to your code.
 
 ## Compilation
 

doc/development/style_guide.md

@@ -25,28 +25,25 @@ with PEP8, consistent formatting, and readable and error-free code:
 
 - [Flake8](https://flake8.pycqa.org/en/latest/) tool to ensure compliance with
   PEP8
-- [Black](https://black.readthedocs.io/en/stable/) code formatter to ensure
-  consistent code formatting
+- [Ruff](https://docs.astral.sh/ruff/) linter and code formatter to ensure
+  code quality and consistent code formatting
 - [Pylint](https://pylint.readthedocs.io/en/latest/) static code analyser to
   find bad code practices or errors
 
-Note that while the entire GRASS code base is Black formatted, full compliance
-with PEP8, Flake8, and Pylint practices is still work in progress.
+Note that while the entire GRASS code base is formatted with `ruff format`,
+full compliance with PEP8, Flake8, and Pylint practices is still work in progress.
 
 See [using pre-commit](#using-pre-commit) for pre-commit setup and usage to
 simplify performing of these checks.
 
-#### Black
+#### Formatting
 
-Use Black to format files:
+Use Ruff's formatter to format files:
 
 ```bash
-black {source_file_or_directory}
+ruff format
 ```
 
-Black is configured via [pyproject.toml](../../pyproject.toml). The line
-length is set to 88 characters.
-
 #### Flake8
 
 Use Flake8 to check formatting and basic issues in all files:
@@ -157,8 +154,9 @@ In that case review the changes and run again `git add` and
 It is also possible to run pre-commit manually, e.g:
 
 ```bash
+pre-commit run --all-files
 pre-commit run clang-format --all-files
-pre-commit run black --all-files
+pre-commit run ruff-format --all-files
 ```
 
 Or to target a specific set of files: