update_readme.yml

name: Update README
on:
  pull_request:
    branches: [ main ]
jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3
      - name: Install doctoc and mdextract
        run: npm install -g doctoc mdextract
      - name: Update README
        run: |
          mdextract --update README.md
          doctoc --github --notitle README.md
      - uses: stefanzweifel/git-auto-commit-action@v4
        with:
          file_pattern: README.md
          commit_message: Apply README changes