fix: correct heredoc syntax in Validate Skill step

Author: TsekaLuk

.github/workflows/release.yml

@@ -14,32 +14,26 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      
+
       - name: Set up Python
         uses: actions/setup-python@v5
         with:
           python-version: '3.11'
-      
+
       - name: Install dependencies
         run: pip install -r requirements.txt
-      
+
       - name: Validate Skill
         run: |
-          python3 << 'EOF'
+          python3 - <<'PYEOF'
           import re, yaml
-          
           with open('SKILL.md', 'r') as f:
               content = f.read()
-          
-          match = re.match(r'^---
-(.*?)
----', content, re.DOTALL)
+          match = re.match(r'^---\n(.*?)\n---', content, re.DOTALL)
           fm = yaml.safe_load(match.group(1))
-          
           print(f"Skill: {fm['name']}")
-          print(f"Version: ${{ github.ref_name }}")
-          EOF
-      
+          PYEOF
+
       - name: Create skill package
         run: |
           mkdir -p dist
@@ -50,7 +44,7 @@ jobs:
             LICENSE \
             README.md \
             README_CN.md
-      
+
       - name: Upload artifact
         uses: actions/upload-artifact@v4
         with:
@@ -63,38 +57,34 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      
+
       - name: Download artifact
         uses: actions/download-artifact@v4
         with:
           name: mineru-skill-release
           path: dist/
-      
+
       - name: Create Release
         uses: softprops/action-gh-release@v2
         with:
           files: dist/*
           generate_release_notes: true
           body: |
             ## MinerU Skill ${{ github.ref_name }}
-            
+
             ### Installation
-            
+
             ```bash
-            # Clone to your skills directory
             git clone https://github.com/Nebutra/MinerU-Skill.git ~/openclaw-skills/mineru/
-            
-            # Or download the release package
-            unzip mineru-skill.zip -d ~/openclaw-skills/mineru/
             ```
-            
+
             ### Quick Start
-            
+
             ```bash
             export MINERU_TOKEN="your-token"
             python3 scripts/mineru_v2.py --dir ./pdfs/ --output ./output/ --resume
             ```
-            
+
             ---
-            
+
             [📖 Documentation](https://github.com/Nebutra/MinerU-Skill#readme)