fix: small error printing fixes on multiheritage

owl2yams/__init__.py

@@ -127,11 +127,12 @@
             if superior_class_fragment is not None:
                 superior_classes.append(superior_class_fragment)
         if superior_classes:
-            print(
-                f"Warning: multi heritage is not support yet. {class_fragment} will speizialize ",
-                f"{superior_classes[0]} and {superior_classes[1::]} ",
-                "specialization will be ignored",
-            )
+            if len(superior_classes) > 1:
+                print(
+                    f"Warning: multi-heritage is not support yet. {class_fragment} will specialize ",
+                    f"{superior_classes[0]} and {', '.join(superior_classes[1::])} ",
+                    "specialization will be ignored",
+                )
             entity_schema._specialized_type = superior_classes[0]
 
     # 2. fetch all datatype properties