Fixes string interpolation

Scripts/Items/Special/Holiday/HolidayBell.cs

@@ -46,7 +46,7 @@ namespace Server.Items
 			set => m_Maker = value;
 		}
 
-		public override string DefaultName => String.Format("A Holiday Bell From {0}", Giver);
+		public override string DefaultName => $"A Holiday Bell From {Giver}";
 
 		private string m_Maker;
 		private int m_SoundID;

Scripts/Items/Special/Holiday/SnowGlobes.cs

@@ -178,7 +178,7 @@ namespace Server.Items
 				if ( idx < 0 || idx >= m_PlaceNames.Length )
 					return "a snowy scene";
 
-				return String.Format( "a snowy scene of {0}", m_PlaceNames[idx] );
+				return $"a snowy scene of {m_PlaceNames[idx]}";
 			}
 		}