upate code_formatter

Author: realDuYuanChao

.github/workflows/code_formatter.yml

@@ -9,4 +9,8 @@ jobs:
       - uses: actions/checkout@v2
       - uses: actions/setup-python@v2
       - uses: psf/black@stable
-      - run: black --check .
+      - run: black --check .
+      - name: Commit black changes
+        if: failure()
+        run: |
+          echo "Need to be formatted."