Update doc.yml

.github/workflows/doc.yml

@@ -22,6 +22,11 @@ jobs:
     - name: Checkout repository
       uses: actions/checkout@v4
 
+    - name: Install Pandoc
+      run: |
+        sudo apt-get update
+        sudo apt-get install -y pandoc
+
     - name: Set up Python
       uses: actions/setup-python@v4 #Uses python install action from here: https://github.com/marketplace?type=actions
       with:
@@ -30,7 +35,7 @@ jobs:
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
-        pip install Markdown==3.4.3 rdflib==6.3.2  # Add any other dependencies if needed
+        pip install Markdown==3.4.3 rdflib==6.3.2  pandoc # Add any other dependencies if needed
         
     - name: Render documentation from ttl
       run: python sphinx/ttl_to_rst.py