fix description in serializer example

torch_em/trainer/default_trainer.py

@@ -204,7 +204,7 @@ class Serializer:
 
         Examples:
             To extend the serialization process you can inherite from this Serializer in a derived Trainer class.
-            Note that `DefaultTrainer.Serializer.dump_generic()` covers most cases already.
+            Note that the generic method `DefaultTrainer.Serializer.dump()` covers most cases already.
 
             This example adds `the_answer` kwarg, which requires extra steps on dumping only because we don't keep a
             'the_answer' attribute: