fix owner for publishing from github action

Author: dhellmann

.github/workflows/python-publish.yaml

@@ -9,7 +9,7 @@ on:
 jobs:
   build-n-publish:
     name: Build and publish Python distributions to PyPI
-    if: ${{ github.repository_owner == 'python-wheel-build' }}
+    if: ${{ github.repository_owner == 'sphinx-contrib' }}
 
     runs-on: ubuntu-latest
     environment: release