update line separator

pages/2_🌐_COVID_Network_Analysis.py

@@ -191,7 +191,7 @@ def visualize_with_pyvis(G: nx.Graph, physics: bool = True) -> str:
         node["color"] = NODE_TYPES.get(node_type, {}).get('color', "#cccccc")
         node["size"] = 20 if node_type == "event" else 15
         title_attrs = {k: v for k, v in node.items() if k != "id"}
-        node["title"] = "<br>".join(f"{k}: {v}" for k, v in title_attrs.items())
+        node["title"] = "\n".join(f"{k}: {v}" for k, v in title_attrs.items())
 
     # Configure edges
     for edge in net.edges: