Core/Spells: Divine Aegis absorb amount will now stack only up to 40% of the target's maximum health

Closes #11

src/server/scripts/Spells/spell_priest.cpp

@@ -295,7 +295,7 @@ class spell_pri_divine_aegis : public SpellScriptLoader
                 if (AuraEffect const* aegis = eventInfo.GetProcTarget()->GetAuraEffect(SPELL_PRIEST_DIVINE_AEGIS, EFFECT_0))
                     absorb += aegis->GetAmount();
 
-                absorb = std::min(absorb, eventInfo.GetProcTarget()->getLevel() * 125);
+                absorb = std::min(absorb, int32(CalculatePct(eventInfo.GetProcTarget()->GetMaxHealth(), 40)));
 
                 GetTarget()->CastCustomSpell(SPELL_PRIEST_DIVINE_AEGIS, SPELLVALUE_BASE_POINT0, absorb, eventInfo.GetProcTarget(), true, nullptr, aurEff);
             }