Minor change to re-deploy site with cname

Author: rustprooflabs

.github/workflows/deploy-book.yml

@@ -19,7 +19,6 @@ jobs:
         echo `pwd`/mdbook >> $GITHUB_PATH
     - name: Deploy GitHub Pages
       run: |
-        # This assumes your book is in the root of your repository.
         # Just add a `cd` here if you need to change to another directory.
         cd docs
         mdbook build