update readme

.github/workflows/UpdateReadmeOnPush.yml

@@ -21,7 +21,7 @@ jobs:
     - name: Check if files match naming pattern
       id: check-files
       run: |
-        if git diff --name-only HEAD^ HEAD -- ./ | grep -E '^\d+[A-Z]\.(cpp|py)$' | grep -v '^\.github/'; then
+        if git diff --name-only HEAD~1 HEAD -- ./ | grep -E '^\d+[A-Z]\.(cpp|py)$' | grep -v '^\.github/'; then
           echo "::set-output name=changed::true"
           echo "::set-output name=updated_files::$(git diff --name-only ${{ github.event.before }} ${{ github.sha }} | grep -E '^\d+[A-Z]\.(cpp|py)$')"
         else