Core/Spell: fix comment.

src/server/game/Spells/Spell.cpp

@@ -6948,7 +6948,7 @@ SpellCastResult Spell::CanOpenLock(uint32 effIndex, uint32 lockId, SkillType& sk
                         skillValue = 5 * m_caster->getLevel();
 
                     // skill bonus provided by casting spell (mostly item spells)
-                    // add the effect base points modifier from the spell casted (cheat lock / skeleton key etc.)
+                    // add the effect base points modifier from the spell cast (cheat lock / skeleton key etc.)
                     if (m_spellInfo->Effects[effIndex].TargetA.GetTarget() == TARGET_GAMEOBJECT_ITEM_TARGET || m_spellInfo->Effects[effIndex].TargetB.GetTarget() == TARGET_GAMEOBJECT_ITEM_TARGET)
                         skillValue += m_spellInfo->Effects[effIndex].CalcValue();