[ci] fix branch name

.github/workflows/docs.yml

@@ -46,11 +46,12 @@ jobs:
           path: target/gh-pages
 
   deploy-docs:
+    name: Deploy documentation
     environment:
       name: github-pages
       url: ${{ steps.deployment.outputs.page_url }}
     runs-on: ubuntu-latest
-    needs: build
+    needs: build-docs
     steps:
       - name: Deploy to GitHub Pages
         id: deployment