fix: restore correct DockerHub URL (sbryngelson/mfc)

Author: sbryngelson

.github/workflows/docker.yml

@@ -163,7 +163,7 @@ jobs:
     needs: Container
     environment:
       name: containers
-      url: https://hub.docker.com/r/mflowcode/mfc
+      url: https://hub.docker.com/r/sbryngelson/mfc
     steps:
       - name: Login to Docker Hub
         uses: docker/login-action@v3