Update 'Class_Diagram'

Class_Diagram.md

@@ -627,7 +627,7 @@ package Data <<Database>> #ddd {
         {static} +ToModel(...)
         {static} +ToModels(...)
         {static} +ToEntity(...)
-        {static} +ToEntity(...)
+        {static} +ToEntities(...)
       }
     
     }