Install asciidoctor

Author: rnc

.github/workflows/hugo.yml

@@ -40,6 +40,10 @@ jobs:
           && sudo dpkg -i ${{ runner.temp }}/hugo.deb
       - name: Install Dart Sass
         run: sudo snap install dart-sass
+      - name: Install Asciidoctor
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y asciidoctor
       - name: Checkout
         uses: actions/checkout@v4
         with: