Add Jupyter install step to workflow to fix CI build failure

Co-authored-by: jeffreyad <112705781+jeffreyad@users.noreply.github.com>
Agent-Logs-Url: https://github.com/pharmaverse/examples/sessions/6ae9315a-6e59-40ac-a6b1-0e11252d595a

Author: Copilot

.github/workflows/docs.yaml

@@ -41,6 +41,9 @@ jobs:
       - name: Set up Quarto
         uses: quarto-dev/quarto-actions/setup@v2
 
+      - name: Install Jupyter
+        run: python3 -m pip install jupyter
+
       - name: Setup R
         uses: r-lib/actions/setup-r@v2