diff --git a/.github/workflows/book-cd.yml b/.github/workflows/book-cd.yml
index e8149e3832..55b2ab1444 100644
--- a/.github/workflows/book-cd.yml
+++ b/.github/workflows/book-cd.yml
@@ -8,33 +8,33 @@ jobs:
   deploy:
     runs-on: ubuntu-latest
     permissions:
-      contents: write  # To push a branch 
-      pull-requests: write  # To create a PR from that branch
+      contents: write # To push a branch
+      pull-requests: write # To create a PR from that branch
     steps:
-    - uses: actions/checkout@v3
-      with:
-        fetch-depth: 0
-    - name: Install latest mdbook
-      run: |
-        tag=$(curl 'https://api.github.com/repos/rust-lang/mdbook/releases/latest' | jq -r '.tag_name')
-        url="https://github.com/rust-lang/mdbook/releases/download/${tag}/mdbook-${tag}-x86_64-unknown-linux-gnu.tar.gz"
-        mkdir mdbook
-        curl -sSL $url | tar -xz --directory=./mdbook
-        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 candle-book
-        mdbook build
-        git worktree add gh-pages
-        git config user.name "Deploy from CI"
-        git config user.email ""
-        cd gh-pages
-        # Delete the ref to avoid keeping history.
-        git update-ref -d refs/heads/gh-pages
-        rm -rf *
-        mv ../book/* .
-        git add .
-        git commit -m "Deploy $GITHUB_SHA to gh-pages"
-        git push --force --set-upstream origin gh-pages
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+      - name: Install latest mdbook
+        run: |
+          tag=$(curl 'https://api.github.com/repos/rust-lang/mdbook/releases/latest' | jq -r '.tag_name')
+          url="https://github.com/rust-lang/mdbook/releases/download/${tag}/mdbook-${tag}-x86_64-unknown-linux-gnu.tar.gz"
+          mkdir mdbook
+          curl -sSL $url | tar -xz --directory=./mdbook
+          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 candle-book
+          mdbook build
+          git worktree add gh-pages
+          git config user.name "Deploy from CI"
+          git config user.email ""
+          cd gh-pages
+          # Delete the ref to avoid keeping history.
+          git update-ref -d refs/heads/gh-pages
+          rm -rf *
+          mv ../book/* .
+          git add .
+          git commit -m "Deploy $GITHUB_SHA to gh-pages"
+          git push --force --set-upstream origin gh-pages