Fix a typo in sql file name

--HG--
branch : trunk

sql/updates/7748_world_scriptname.sql

@@ -0,0 +1,10 @@
+DELETE FROM `areatrigger_scripts` WHERE `entry` IN (5284,5285,5286,5287,4871,4872,4873,5108);
+INSERT INTO `areatrigger_scripts` (`entry`,`ScriptName`) VALUES 
+(5284, 'at_aldurthar_gate'),
+(5285, 'at_aldurthar_gate'),
+(5286, 'at_aldurthar_gate'),
+(5287, 'at_aldurthar_gate'),
+(4871, 'at_warsong_farms'),
+(4872, 'at_warsong_farms'),
+(4873, 'at_warsong_farms'),
+(5108, 'at_stormwright_shelf');