ci: fix needs syntax

Author: noraj

.github/workflows/documentation.yml

@@ -37,7 +37,9 @@ jobs:
       name: github-pages
       url: ${{ steps.deployment.outputs.page_url }}
     runs-on: ubuntu-latest
-    needs: build-yard, build-jekyll
+    needs:
+      - build-yard
+      - build-jekyll
     steps:
       - name: Deploy to GitHub Pages
         id: deployment