Update comments to reflect license changes in tests

Changed comments in test_dataset_update.py to correctly indicate that the tests update the dataset license instead of the title, improving code clarity.

Author: JR-1991

tests/integration/test_dataset_update.py

@@ -91,7 +91,7 @@ def test_custom_license_update(
             api_token=api_token,
         )
 
-        # Fetch the dataset and update the title
+        # Fetch the dataset and update the license
         dataset = dataverse.load_dataset(pid)
         dataset.license = CustomLicense(
             termsOfUse="CHANGED",
@@ -151,7 +151,7 @@ def test_custom_license_update_with_predefined_license(
             api_token=api_token,
         )
 
-        # Fetch the dataset and update the title
+        # Fetch the dataset and update the license
         dataset = dataverse.load_dataset(pid)
         assert isinstance(dataset.license, License), (
             "Dataset license is not a predefined license"