TrinityCore/sql/old/2.4.3/00783_world.sql

DELETE FROM `trinity_string` WHERE `entry` IN (10056, 10057);
INSERT INTO `trinity_string` (entry, content_default) VALUES
(10056, 'You must be a member of the Horde to enter the Hall of Legends.'),
(10057, 'You must be a member of the Alliance to enter the Champion\'s Hall.');