correct ci message

.github/workflows/python-package.yml

@@ -1,40 +1,40 b''
 # This workflow will install Python dependencies, run tests and lint with a variety of Python versions
 # For more information see: https://help.github.com/actions/language-and-framework-guides/using-python-with-github-actions
 
 name: Python package
 
 permissions:
   contents: read
 
 on:
   push:
     branches: [ main, 7.x ]
   pull_request:
     branches: [ main, 7.x ]
 
 jobs:
   formatting:
 
     runs-on: ubuntu-latest
     timeout-minutes: 5
     steps:
     - uses: actions/checkout@v3
       with:
         fetch-depth: 0
     - name: Set up Python
       uses: actions/setup-python@v4
       with:
         python-version: 3.x
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
         # when changing the versions please update CONTRIBUTING.md too
         pip install --only-binary ':all:' darker==1.5.1 black==22.10.0
     - name: Lint with darker
       run: |
         darker -r 60625f241f298b5039cb2debc365db38aa7bb522 --check --diff . || (
         echo "Changes need auto-formatting. Run:"
-        echo "    darker -r 60625f241f298b5039cb2debc365db38aa7bb522"
+        echo "    darker -r 60625f241f298b5039cb2debc365db38aa7bb522 ."
         echo "then commit and push changes to fix."
         exit 1
         )