Core: whitespace cleanup, reduce double blank line to single (#25795)

* Core/Misc: fix double empty line

* worldserver.conf

(cherry picked from commit a32b6b8ac4)

src/server/scripts/EasternKingdoms/ShadowfangKeep/boss_apothecary_hummel.cpp

@@ -462,7 +462,6 @@ class spell_apothecary_validate_area : public SpellScriptLoader
                 targets.push_back(target);
             }
 
-
             void HandleScript(SpellEffIndex /*effindex*/)
             {
                 GetHitUnit()->CastSpell(GetHitUnit(), SPELL_BUNNY_LOCKDOWN, true);