Update autogalaxy/abstract_fit.py

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Author: Jammy2211

autogalaxy/abstract_fit.py

@@ -72,7 +72,7 @@ def sparse_operator(self) -> Optional[aa.ImagingSparseOperator]:
 
         Returns
         -------
-        The w-tilde matrix if the w-tilde formalism is being used for this inversion.
+        The sparse operator used for efficient linear algebra calculations for this inversion, if enabled.
         """
         if self.dataset.sparse_operator is not None:
             if self.total_mappers > 0: