message: Add Example for defaultClasses
  (docs)defaultClasses: add example of how to use them
diff: @@ -10,6 +10,12 @@ This Guide contains all default classes typegoose provides
  ->Please know that all properties provied are just types to show which are available from mongoose, or stated otherwise
  +Example of using all of them:
  +
  +```ts
  +class SomeClass extends TimeStamps, Base {} // this class now has the types of "TimeStamps" & "Base"
  +```
  +
  ## TimeStamps
  The Time Stamps Class provides the following types:
  