change command

.github/workflows/update-docs.yml

@@ -19,7 +19,7 @@ jobs:
 
       - name: Check for changes in docs/ and deploy
         run: |
-          if git diff --name-only ${{ github.event.before }} ${{ github.sha }} | grep -q "^docs/"; then
+          if git diff --quiet HEAD^ HEAD docs/; then
             echo "Changes detected in docs/"
             pip install poetry
             poetry install --only doc