Add markdown lint action

Author: comfyui-wiki

.github/workflows/markdown-lint.yml

@@ -0,0 +1,67 @@
+name: Markdown Lint and Fix
+
+on:
+  pull_request:
+    branches: [main]
+    paths:
+      - "comfyui_embedded_docs/docs/**/*.md"
+
+jobs:
+  markdown-lint:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+      pull-requests: write
+    
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          fetch-depth: 0
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: "18"
+
+      - name: Install markdownlint-cli
+        run: npm install -g markdownlint-cli
+
+      - name: Run markdown linting and fix
+        run: |
+          # Find all markdown files and fix linting issues
+          find comfyui_embedded_docs/docs -name "*.md" -type f | while read file; do
+            echo "Fixing linting issues for: $file"
+            markdownlint --fix "$file" || true
+          done
+
+      - name: Check for changes
+        id: verify-changed-files
+        run: |
+          if [ -n "$(git status --porcelain)" ]; then
+            echo "changed=true" >> $GITHUB_OUTPUT
+            echo "Files have been modified by markdownlint"
+          else
+            echo "changed=false" >> $GITHUB_OUTPUT
+            echo "No changes made by markdownlint"
+          fi
+
+      - name: Commit changes
+        if: steps.verify-changed-files.outputs.changed == 'true'
+        run: |
+          git config --local user.email "[email protected]"
+          git config --local user.name "GitHub Action"
+          git add comfyui_embedded_docs/docs/**/*.md
+          git commit -m "Auto-fix markdown linting issues
+
+          🤖 Generated with GitHub Actions
+
+          Co-Authored-By: GitHub Action <[email protected]>" || exit 0
+
+      - name: Push changes
+        if: steps.verify-changed-files.outputs.changed == 'true'
+        uses: ad-m/github-push-action@master
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          branch: ${{ github.head_ref }}