Follow-up https://github.com/rathena/rathena/commit/8d49496177f0c01d00dd0cabfaed2567aea4e527 (#7867)

Corrected a mistake for Eternal Slash
- The total factor weight of POW with Shadow Exceed should be 3.

src/map/battle.cpp

@@ -5505,7 +5505,7 @@ static int battle_calc_attack_skill_ratio(struct Damage* wd, struct block_list *
 			skillratio += -100 + 265 * skill_lv + 2 * sstatus->pow;
 
 			if( sc != nullptr && sc->getSCE( SC_SHADOW_EXCEED ) ){
-				skillratio += 100 * skill_lv + 3 * sstatus->pow;
+				skillratio += 100 * skill_lv + sstatus->pow;
 			}
 
 			RE_LVL_DMOD(100);