DB/Spells: renamed spell_dbc 'Comment' colulmn to 'SpellName' to reduce differences between branches

sql/updates/world/4.3.4/2021_08_17_00_world.sql

@@ -0,0 +1,2 @@
+ALTER TABLE `spell_dbc` 
+CHANGE COLUMN `Comment` `SpellName` varchar(128) NOT NULL AFTER `SpellTargetRestrictionsId`;