fix dir

Author: wing328

.github/workflows/samples-r.yaml

@@ -31,7 +31,6 @@ jobs:
         run: |
             sudo echo "127.0.0.1 petstore.swagger.io" | sudo tee -a /etc/hosts
       - uses: r-lib/actions/setup-r@v2
-        working-directory: ${{ matrix.sample }}
         with:
           use-public-rspm: true