Closes UNB-2173 Add CNAME record to unboxapi

Author: whoseoyster

.github/workflows/docs.yml

@@ -25,6 +25,7 @@ jobs:
         cp -r docs/build/html/* gh-pages/
         cd gh-pages
         touch .nojekyll
+        echo "reference.unbox.ai" > CNAME
         git config --local user.email "action@github.com"
         git config --local user.name "GitHub Action"
         git add .