Fix a typo and add a comment

1 files changed, 1 insertions, 1 deletions

diff --git a/readme.txt b/readme.txt
index 4c902c3..33eb3a5 100644
--- a/readme.txt
+++ b/readme.txt
@@ -35,5 +35,5 @@ Debugging
 
 >>> import server
 >>> session = server.user_session.authenticate_and_create_session(user, pass)
->>> session.get_problem_data('prolog', 'family_relationss', 'sister_2')
+>>> session.get_problem_data('prolog', 'family_relations', 'sister_2')
 >>> ...