Docker Compose: Fix generated docker compose suffix in GitHub action.

Author: brycelelbach

.github/workflows/generate-syllabi-docker-compose.yml

@@ -34,6 +34,6 @@ jobs:
       - name: Commit and push to generated branch
         run: |
           git checkout -B generated
-          git add tutorials/**/notebooks/syllabi/*-docker-compose.yml
+          git add tutorials/**/notebooks/syllabi/*__docker_compose.yml
           git commit -m "[Automated] Generate Docker compose files from syllabi."
           git push origin generated --force