Clarify test

api/tests/unit/webhooks/test_unit_webhooks.py

@@ -324,6 +324,11 @@ def test_call_webhook_with_failure_mail_after_retries_does_not_retry_if_not_usin
 def test_call_integration_webhook_does_not_raise_error_on_backoff_give_up(
     mocker: MockerFixture,
 ) -> None:
+    """
+    This test is essentially verifying that the `raise_on_giveup` argument
+    passed to the backoff decorator on _call_webhook is working as we
+    expect it to.
+    """
     # Given
     url = "https://test.com/webhook"
     config = mocker.MagicMock(secret=None, url=url)
@@ -334,5 +339,6 @@ def test_call_integration_webhook_does_not_raise_error_on_backoff_give_up(
     result = call_integration_webhook(config, data={})
 
     # Then
-    # we don't get a result from the function, but no exception is raised
+    # we don't get a result from the function (as expected), and no exception is
+    # raised
     assert result is None