Broken link on OnRamp June 2023 replay

Due to a bug in BBB in December, some OnRamp replays have been rebuilt and URL have changed. June 2023 must be fixed. Correct link is https://bbb.opencloud.lu/playback/presentation/2.3/e1d2665ed6d4ad3a07f23e5a3638fe49dc3a95b8-1686902873481