fix: remove github.workspace from uses path

Author: 56kyle

.github/workflows/sync-demos.yml

@@ -22,6 +22,6 @@ jobs:
           path: "${{ github.workspace }}/cookiecutter-robust-python"
 
       - name: Update Demo
-        uses: "${{ github.workspace }}/cookiecutter-robust-python/.github/workflows/update-demo.yml"
+        uses: "./cookiecutter-robust-python/.github/workflows/update-demo.yml"
         with:
           demo_name: ${{ matrix.demo_name }}