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/Custom/custom_script_loader.cpp

@@ -17,7 +17,6 @@
 
 // This is where scripts' loading functions should be declared:
 
-
 // The name of this function should match:
 // void Add${NameOfDirectory}Scripts()
 void AddCustomScripts()