Fix bonuses of Rampart's Treasury and Fountain of Fortune

Change IDs of two special buildings in Rampart to make them identical with one in config files.
Original code was introduced in 0ca9f64573b68d0cca1bbc3860a107ba805d0b58 and current IDs likely was typo.

More details available on bug tracker:
http://bugs.vcmi.eu/view.php?id=1949