Remove extend-include for Markdown files

Refs:
astral-sh/ruff#3792
astral-sh/ruff#23434
astral-sh/ruff#23574

Author: kdeldycke

.github/workflows/autofix.yaml

@@ -83,7 +83,7 @@ jobs:
         # Initialize [tool.ruff] in pyproject.toml if it doesn't exist.
         # Projects with existing ruff config will keep their settings.
         run: |
-          uv tool install 'ruff==0.15.1'
+          uv tool install 'ruff==0.15.5'
           uvx --no-progress --from . repomatic init ruff
       # XXX Ruff is planning to support linting and formatting in one unified command at one point.
       #     See: https://github.com/astral-sh/ruff/issues/8232
@@ -167,7 +167,7 @@ jobs:
           --with 'mdformat_simple_breaks==0.1.0'
           --with 'mdformat-toc==0.5.0'
           --with 'mdformat-web==0.2.0'
-          --with 'ruff==0.15.1'
+          --with 'ruff==0.15.5'
           'mdformat==1.0.0'
       - name: Install shfmt
         run: sudo apt install --yes shfmt

changelog.md

@@ -5,6 +5,8 @@
 > [!WARNING]
 > This version is **not released yet** and is under active development.
 
+- Remove `extend-include` for Markdown files now that ruff 0.15.5 discovers `*.md` by default in preview mode.
+
 ## [`6.2.1` (2026-03-06)](https://github.com/kdeldycke/repomatic/compare/v6.2.0...v6.2.1)
 
 - Fix `actions/checkout` wiping downloaded Python package artifacts (`.whl`, `.tar.gz`) before `gh release create` could attach them. Move checkout before artifact download so the release draft includes the Python distribution files.

pyproject.toml

@@ -153,10 +153,6 @@ exclude-newer-package = { "click-extra" = "0 day", "repomatic" = "0 day" }
 build-backend.module-root = ""
 
 [tool.ruff]
-# Enable formatting of Python code blocks in Markdown files.
-# https://docs.astral.sh/ruff/formatter/#markdown-code-formatting
-# https://github.com/astral-sh/ruff/pull/23434
-extend-include = [ "*.{markdown,mdown,mkdn,mdwn,mkd,md,mdtxt,mdtext,mdx}" ]
 preview = true
 fix = true
 unsafe-fixes = true