DB/creature: Restore position for two Wrath Masters changed in a previous commit

sql/updates/world/3.3.5/2017_02_05_03_world.sql

@@ -0,0 +1,3 @@
+-- 
+UPDATE `creature` SET `position_x`=-99.78, `position_y`=1892.9, `position_z`=77.35 WHERE `guid`=68313;
+UPDATE `creature` SET `position_x`=-276.43, `position_y`=1529.1, `position_z`=31.8 WHERE `guid`=68311;