message: fixed typos in test_history.py
diff: @@ -104,7 +104,7 @@ class TestHistory:
  def find_latest(self, search_pred):
  """
  Searches for the last instance of an object that satisfies the given predicate in a history.
  - :param search_pred: A predicate ththe number of onat the search will use to choose an object.
  + :param search_pred: A predicate that the search will use to choose an object.
  :return: the last object to satisfy the given predicate.
  """
  pass
  @@ -120,7 +120,7 @@ class TestHistory:
  def count(self, search_pred):
  """
  Counts how many objects satisfy the given predicate.
  - :param search_pred:
  + :param search_pred: A predicate that the search will use to choose an object.
  :return: the number of objects that satisfy the predicate
  """
  pass
  