Update root path for GH pages artefact (#39)

Co-authored-by: Tommy Lillehagen <tlil@meta.com>

Author: tlil

.github/workflows/deploy.yml

@@ -52,7 +52,7 @@ jobs:
       - name: Upload Build Artifact
         uses: actions/upload-pages-artifact@v3
         with:
-          path: build
+          path: build/hacklang.org
 
   deploy:
     name: Deploy to GitHub Pages