docstring fixed for default batch size

Author: mkumar73

mambular/models/sklearn_base_classifier.py

@@ -146,7 +146,7 @@ def build_model(
             The validation target values. Required if `X_val` is provided.
         random_state : int, default=101
             Controls the shuffling applied to the data before applying the split.
-        batch_size : int, default=64
+        batch_size : int, default=128
             Number of samples per gradient update.
         shuffle : bool, default=True
             Whether to shuffle the training data before each epoch.