update doc-string to match renamed class variable (#3655)

Signed-off-by: Aakash Ashok Naik <[email protected]>

pymatgen/io/lobster/outputs.py

@@ -831,7 +831,7 @@ def __init__(self, filename: str | None, **kwargs) -> None:
         """
         Args:
             filename: filename of lobsterout.
-            **kwargs:dict to initialize Lobsterout instance (see > INIT_ATTRIBUTES_DEFAULTS)
+            **kwargs:dict to initialize Lobsterout instance (see > ATTRIBUTE_DEFAULTS)
         """
         self.filename = filename
         if kwargs: