Update clustering.py

clustering.py

@@ -696,7 +696,7 @@ def build_sankey_data(
     for i, threshold in enumerate(threshold_values):
         for j in valid_clusters[threshold]:
             cluster_name = (
-                f"{j} (d={threshold)})\nTotal: {cluster_counts[threshold].get(j, 0)}"
+                f"{j} (d={threshold})\nTotal: {cluster_counts[threshold].get(j, 0)}"
             )
             if cluster_name not in labels:
                 labels.append(cluster_name)