Update HugoAction.yml

Author: Steven Shum

.github/workflows/HugoAction.yml

@@ -42,4 +42,5 @@ jobs:
           publish_dir: ./public
           publish_branch: gh-pages
           force_orphan: true
+          cname: webstack-demo.weiyan.cc
           full_commit_message: ${{ github.event.head_commit.message }}