Fixes Brandish Spear hit count (#4830)

* Fixes #4826.
* Brandish Spear damage should be calculated separately for each hit.
Thanks to @Masao87!

db/re/skill_db.yml

@@ -2110,7 +2110,7 @@ Body:
       IncreaseGloomyDayDamage: true
     Range: -2
     Hit: Multi_Hit
-    HitCount: 3
+    HitCount: -3
     Element: Weapon
     SplashArea: 2
     ActiveInstance: 3