style: Format slice notation

Author: dimitri-yatsenko

src/datajoint/diagram.py

@@ -761,7 +761,7 @@ def make_dot(self):
                     if schema_name and "." in name:
                         cluster_label = cluster_labels.get(schema_name)
                         if cluster_label and name.startswith(cluster_label + "."):
-                            display_name = name[len(cluster_label) + 1:]
+                            display_name = name[len(cluster_label) + 1 :]
                     node.set_label("<<u>" + display_name + "</u>>" if node.get("distinguished") == "True" else display_name)
                 node.set_color(props["color"])
                 node.set_style("filled")
@@ -960,7 +960,7 @@ def make_mermaid(self) -> str:
                         # Strip module prefix from display name if it matches the cluster label
                         display_name = node
                         if "." in node and node.startswith(label + "."):
-                            display_name = node[len(label) + 1:]
+                            display_name = node[len(label) + 1 :]
                         class_suffix = f":::{cls}" if cls else ""
                         lines.append(f"        {safe_id}{left}{display_name}{right}{class_suffix}")
                 lines.append("    end")