🐛 fix PR preview workflow

Author: Jwaminju

.github/workflows/build_pr_preview.yml

@@ -27,7 +27,7 @@ jobs:
         run: bundle install
 
       - name: Build Jekyll site
-        run: bundle exec jekyll build
+        run: bundle exec jekyll build --baseurl "/${{ github.event.repository.name }}/pull/${{ github.event.number }}"
 
       - name: Deploy to Preview Branch
         run: |