[keras/utils/dataset_utils.py] Standardise docstring usage of "Default to"
diff --git a/keras/utils/dataset_utils.py b/keras/utils/dataset_utils.py
index 0103cad42c3..35d234d6255 100644
--- a/keras/utils/dataset_utils.py
+++ b/keras/utils/dataset_utils.py
@@ -41,11 +41,11 @@ def split_dataset(
         left_size: If float (in the range `[0, 1]`), it signifies
           the fraction of the data to pack in the left dataset. If integer, it
           signifies the number of samples to pack in the left dataset. If
-          `None`, it defaults to the complement to `right_size`.
+          `None`, it uses the complement to `right_size`. Defaults to `None`.
         right_size: If float (in the range `[0, 1]`), it signifies
           the fraction of the data to pack in the right dataset. If integer, it
           signifies the number of samples to pack in the right dataset. If
-          `None`, it defaults to the complement to `left_size`.
+          `None`, it uses the complement to `left_size`. Defaults to `None`.
         shuffle: Boolean, whether to shuffle the data before splitting it.
         seed: A random seed for shuffling.
 
@@ -130,10 +130,10 @@ def _convert_dataset_to_list(
         dataset_type_spec : the type of the dataset
         data_size_warning_flag (bool, optional): If set to True, a warning will
           be issued if the dataset takes longer than 10 seconds to iterate.
-          Defaults to True.
+          Defaults to `True`.
         ensure_shape_similarity (bool, optional): If set to True, the shape of
           the first sample will be used to validate the shape of rest of the
-          samples. Defaults to True.
+          samples. Defaults to `True`.
 
     Returns:
         List: A list of tuples/NumPy arrays.
@@ -254,10 +254,10 @@ def _get_next_sample(
         dataset_iterator : An `iterator` object.
         ensure_shape_similarity (bool, optional): If set to True, the shape of
           the first sample will be used to validate the shape of rest of the
-          samples. Defaults to True.
+          samples. Defaults to `True`.
         data_size_warning_flag (bool, optional): If set to True, a warning will
           be issued if the dataset takes longer than 10 seconds to iterate.
-          Defaults to True.
+          Defaults to `True`.
         start_time (float): the start time of the dataset iteration. this is
           used only if `data_size_warning_flag` is set to true.
 

This is one of many PRs. Discussion + request to split into multiple PRs @ #17748