Fix Neo4j service name in CI workflow

- Change 'neo4j' to 'graphdone-neo4j' to match docker-compose.yml
- This fixes the 'no such service: neo4j' error

Author: mvalancy

.github/workflows/comprehensive-tests.yml

@@ -68,7 +68,7 @@ jobs:
       - name: Start services
         run: |
           # Start Docker services
-          docker compose -f deployment/docker-compose.yml up -d neo4j
+          docker compose -f deployment/docker-compose.yml up -d graphdone-neo4j
           
           # Wait for Neo4j to be ready
           timeout 60 bash -c 'until curl -s http://localhost:7474 > /dev/null; do sleep 2; done'