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/Pet/pet_shaman.cpp

@@ -50,7 +50,6 @@ class npc_pet_shaman_earth_elemental : public CreatureScript
         {
             npc_pet_shaman_earth_elementalAI(Creature* creature) : ScriptedAI(creature) { }
 
-
             void Reset() override
             {
                 _events.Reset();